After an hour of heavy negotiation with Mycroft, they were back at Baskerville. Sherlock was driving, while Alex had called shotgun again. John was ticked off at her, but Alex had just stuck her tounge out at him. Some things between them had never changed. 

"Afternoon, sir. Turn the engine off." A guard said. Sherlock handed him a pass. "Thank you."

"I need to see Major Barrymore as soon as we get inside." Sherlock said quietly.

"Right." John nodded. 

"Which means you'll have to start the search for the hound." Sherlock said.

"Okay." John said.

"In the labs, Stapleton's first." Sherlock said.

"Hey, Sherlock, can I come with you?" Alex asked.

"Could be dangerous." Sherlock warned.

"I laugh in the face of danger! Ha ha ha!" Alex said.

The gate was opened and they drove to the building where they'd been before. They split up, Alex and Sherlock going to Barrymore and John going to Dr. Stapleton. After Sherlock stated why they were there, Barrymore laughed.

"Oh, you know I'd love to. I'd love to give you unlimited access to this place. Why not?" He said sarcastically.

"It's a simple enough request, Major." Alex said, rolling her eyes.

"I've never heard of anything so bizarre." Barrymore said.

"You're to give us 24 hours, it's what I've negotiated." Sherlock said.

"Not a second more." Barrymore said. "I may have to comply with this order, but I don't have to like it. I don't know what the hell you expect to find here anyway."

"Perhaps the truth." Sherlock said.

"About what?" Barrymore asked. "Oh, I see. The big coat should have told me. You're one of the conspiricy lot, aren't you? Well, then go ahead. Seek them out - the monsters, the death rays, the aliens."

"Have you got any of those?" Sherlock asked. "Oh, just wondering."

"A couple crash landed here in the 60's." Barrymore said. "We call them Abbot and Costello. Good luck, Mr. Holmes and Miss Watson." 

Sherlock and Alex walked out of the office and began looking around. Sherlock turned to Alex and gave her a stern look.

"We're here to find what happened with Henry, not to rescue puppies." He said. "Oh, has John angered you in any way lately?"

"Not recently, no." Alex said. "But he did kill my hamster when we were kids."

"Well, then, get ready for your revenge." Sherlock said, grinning as he walked into a room full of security cameras. 

"What did you do?" Alex asked, following him.

Sherlock pulled up the room John was in. The lights were off and John was just wandering around. There was audio, so they both could hear anything John was saying. He slid his key and went into the next room. Sherlock quickly found the next room that he was in. John went into several more rooms, in which all the lights were turned off. Sherlock hit a button so a bright light shined in John's face.

"Oh ow! Jesus, ow!" John said. Sherlock hit another button and an alarm started blaring. John covered his ears. "Ow, oh, ow!"

"That's kind of mean." Alex said. 

He slid his card and his access was denied. Sherlock and Alex watched as John's face turned panicked.

"Oh, come on!" He said. 

Sherlock stopped the alarm and turned off the lights. John took out his flashlight and shined it around the room.

"Hello?" He said. "What the..."

He kept rubbing his face. He looked like how Alex had felt when she'd seen the hound. Alex turned to Sherlock.

"What did you do to him?" She asked.

"Just keep watching." Sherlock said.

John shined his flashlight over at some covered cages. He uncovered one, and nothing jumped out. Something clanged behind him and he turned around. John shrugged and uncovered another cage. Nothing in there either. But the door was open. John backed up a little. He uncovered the third cage and a monkey jumped out at him. Alex burst out laughing in the other room.

John was not finding his situation funny at all, though. He didn't even know what Sherlock was doing or had done. The coffee that he'd drank the morning had been drugged. He heard a growling noise and turned around. John decided that he had to get out of here. He walked over to the door and slid his card. His access was, once again, denied.

"No, come on, come on." He said, sliding the card again. Denied. He picked up his phone and called Alex, who had left her phone at the hotel. "Alex, pick up, damn it!"

John crept around the room after turning the phone off. He wanted to save the battery. John went to another door and just as he was about to slide it, he heard growling. John covered his mouth so the hound wouldn't be able to hear him breathing. He make a break for the open cage door and locked himself inside. He covered it up again. He sat down and his phone rang. It was Sherlock.

"It's here, it's in here with me!" John whispered frantically.

"Where are you?" Sherlock asked.

"Get me out, Sherlock, you've got to get me out of here!" John said. "The big lab, the first lab that we saw."

"John? John?" Sherlock said.

"Now, Sherlock, please!" John said, covering his mouth.

"All right, I'll find you, keep talking." Sherlock said, waving to Alex as he got up. They walked out of the room together.

"I can't, it'll hear me!" John said.

"Keep talking. What are you seeing?" Sherlock asked. John didn't answer for a minute. "John? What can you see?"

"I don't know, I don't know. But I can hear it." John said. He heard the hound growling again. "Did you hear that?"

"Stay calm, stay calm. Can you see it?" Sherlock asked. John didn't answer again. Alex took the phone.

"John, it's Alex. Can you see it?" She asked.

"No." John said. He suddenly saw it. He backed up against the cage wall. "I can see it. It's here, oh God, it's here."

Sherlock ran into the lab and turned on the lights. Alex rushed to the cage and uncovered it. John breathed a sigh of relief as she unlocked to door.

"Are you alright? John?" Sherlock said, putting his hand on John's shoulder. John got out of the cage.

"Jesus Christ, it was the hound!" He said. "Sherlock, Alex, it was here! I swear it! It must...did either of you see it? You must have!"

"It's alright, it's okay now." Alex said.

"NO, IT'S NOT, IT'S NOT OKAY!" John yelled. "I SAW IT, I WAS WRONG!"

"Why is it whenever either of you get scared, I get yelled at?" Alex asked, shaking her head.

"Hm, well let's not jump to conclusions." Sherlock said.

"What?" John asked.

"What did you see?" Sherlock asked.

"I told you, I saw the hound." John said.

"Huge, red eyes?" Sherlock asked.

"Yes." John nodded.

"Glowing?" Sherlock asked.

"Yeah." John nodded.

"No." Sherlock said.

"What?" Alex and John said at the same time.

"I made up the bit about glowing." Sherlock said. "You saw what you expected to see because I told you. You have been drugged, we have all been drugged."

"Drugged." Alex repeated.

"Can you walk?" Sherlock asked.

"Of course I can walk!" John said.

"Come on, then." Sherlock said. "It's time to lay this ghost."

"Ghostbusters!" Alex said in sing song.

The three walked to the lab where Dr. Stapleton worked, Alex trying to sing the Ghostbusters theme song. Sherlock kept covering her mouth. 

"Stop singing that! I hate that movie!" Sherlock said.

"How can you hate that movie?" Alex asked.

"I just do!" Sherlock said. "Now, stop singing!"

"I don't wanna!" Alex whined. 

"I hate you." Sherlock said.

"No you don't." Alex said.

They walked into the room where Dr. Stapleton was. She stopped testing on the rabbit she had out and looked at the three of them.

"Well, back again?" She asked. "What's on your mind this time?"

"Murder, Dr. Stapleton, refined, cold-blooded murder." Sherlock said. He shut off the light and saw that all the rabbits were glowing. He turned the lights back on. "Shall you tell little Kirstie what happened to Bluebell, or shall I?"

"Ok, what do you want?" Stapleton asked.

"Can I borrow your microscope?" Sherlock asked.

He was granted the request. He was examining the sugar he'd put in John's coffee and trying to find out what elements were in it. John was still trying to calm down. Alex had given him some water.

"You sure you're okay? You look peaked." Dr. Stapleton said.  

"I'm all right." John nodded.

"It was the GFP gene from a jellyfish in case you're intrested." Dr. Stapleton said.

"What?" Alex said.

"In the rabbits." Dr. Stapleton said.

"Mm, right, yes." John said.

"It was a mix up. My daughter ended up with one of the lab specimens, so poor Bluebell had to go." Dr. Stapleton said.

"Your compassion's overwhelming." Alex said sarcastically.

"I know. I hate myself sometimes." Dr. Stapleton said.

"So, go on, then. You can trust me, I'm a doctor." John said. "What else have you go hidden away here?"

"Listen, if you can imagine it, someone is probably doing it somewhere. Of course they are." Dr. Stapleton said.

"Cloning?" Alex said.

"Yes, of course." Dr. Stapleton nodded. "Dolly the sheep, remember?"

"Wasn't ther first cloned cat named Copy Cat?" Alex asked. Dr. Stapleton nodded again. "Well, they saw the chance and they took it."

"Human cloning?" John pryed.

"Why not?" Dr. Stapleton said.

"Big animals, like lions, tigers, bears?" John asked.

"Oh my." Alex said.

"Size isn't a problem." Dr. Stapleton said. "The only problems are ethics and the law and both of those can be very flexible. But not here, not at Baskerville."

Sherlock chucked his slide that had the sugar on it at the wall. "Damn!"

"Calm yourself." Alex said.

"Nothing there! Doesn't make any sense!" He yelled.

"What were you expecting to find?" Dr. Stapleton said.

"Drug, of course, it has to be a drug!" Sherlock said. "Hallucinogenic or deliriant of some kind. There's no trace of anything in the sugar."

"Sugar?" John asked.

"The sugar, yes." Sherlock nodded. "It's a simple process of elimination. I saw the hound, saw it as my imagination expected me to see it. A genetically engeineered monster, but I knew I couldn't believe the evidence of my own eyes, so there's seven possible reasons for it, the most possible being. Alex, you saw it too, but John, you didn't. You didn't see it. Now we have eaten and drunk exactly the same things since we've got to Grimpen apart from one thing. You don't take sugar in your coffee."

"I see." Alex nodded.

"I took it from Henry Knight's kitchen, his sugar. It's perfectly alright." Sherlock said.

"But, maybe it wasn't a drug." John said.

"No, it has to be a drug! But how did it get into our systems, how? It must be something, something...something buried deep." Sherlock suddenly turned around and pointed to John and Dr. Stapleton. "Get out."

"What?" Dr. Stapleton said.

"Get out. I need to go to my mind palace." Sherlock said. Alex started to leave too. "No, Alex, you stay. Sit down on the floor."

Alex raised her eyebrows at him, but complyed. Sherlock laid down and put his head in her lap. Alex laughed. Sherlock pressed a finger to her lips.

"I'm letting you be in here, don't get yourself kicked out." He warned. Alex nodded.

Sherlock looked through his memories for anything that would work. He moved his hands, swatting things away. Alex ran her fingers through his hair. Sherlock kept whacking things away, but never once hitting her hand. His eyes suddenly opened. 

"Liberty, Indiana." He said. "I think I've got it!"

"Good." Alex nodded. "Now, get off my lap, my legs are asleep."

Sherlock and Alex found John and Dr. Stapleton. Dr. Stapleton led them to a room with a large computer in it.

"Project H.O.U.N.D. I must have read about it somewhere and stored it away. Experiment in a CIA facility in Liberty, Indiana." Sherlock said.

Dr. Stapleton typed in her username and password. She looked to Sherlock and pointed at the search bar.

"H-O-U-N-D." Sherlock said. It was classified. Sherlock groaned.

"That's as far as my access goes, I'm afraid." Dr. Stapleton said.

"Well, there must be an override. A password." Sherlock said.

"I imagine so, but that would be Major Barrymore's." Dr. Stapleton said.

Sherlock walked out of the room and into a small office. "Password, password, password. He sat here when he thought it up. Describe him to me."

"You've seen him." Dr. Stapleton said.

"Describe him." Sherlock said.

"He's a bloody martinet, a throwback, the sort they'd have to send into sewers." Dr. Stapleton said.

"Good, excellent. Old-fashioned, traditional. That's not the sort of man that'd use children's names as a password. He loves his job, proud of it and this is work related. So what's at eye level. Books, Jane's Defense Weekly, bound copies, Hannibal, Wellington, Rommel, Churchill's History of the English Speaking Peoples all four volumes. Churchill, he's fond of Churchill. Copy of the Downing Street Years, one, two, three, four, five, seperate biographies of Thatcher, mid-eighties at a guess. Father and son, Barrymore senior medals, distinguished service order." Sherlock said.

"That date, I'd say, Falkland's veteren." John said.

"Right, so I'd say Thatcher's the more likely bet than Churchill." Sherlock said.

"So that's the password?" Dr. Stapleton said.

"No, with a man like Major Barrymore, only first name terms will do." Sherlock said. He entered the password which was 'Maggie.'

Sherlock read all the information about project H.O.U.N.D. that he could. The first letters of the original teams last names made up the acronym. It was a drug. Sherlock had been right. 

"Project Hound. A new deliriant drug which rendered it's users. Incredibly suggestible." Sherlock murmered. "They wanted to use it as an anti-personell weapon to totally disorient the enemy using fear and stimulus but they shut it away and hid it down in 1986."

"Because of what it did to the subjects they tested." Dr. Stapleton said.

"And what they did to others." Sherlock said. "Prolonged exposure drove them insane, made them almost uncontrollably agressive."

"So, someone's been doing it again." John said. "Carrying on the experiments."

"Attempting to refine them, perhaps for the last 20 years." Sherlock said. 

"Who?" Alex asked.

"Those names mean anything to yous?" John asked Dr. Stapleton.

"No, not a thing." She said.

"Five principle scientists, 20 years ago. Maybe our friend's somewhere in the back of the picture, somebody who was old enough to be there at the time of the experiments in 1986. Maybe somebody who says 'cell phone' because of time spent in America." Sherlock said, his eyes focusing on a particular man in the back. It was Dr. Frankland. "You remember, John?"

"Mmhm." John nodded.

"Gave us his number in case we needed him." Sherlock said.

"Oh my God, Bob Frankland." Dr. Stapleton said. "But Bob doesn't even work on that kind of thing, I mean he's a virologist. This was chemical warfare."

"That's where he started though." Sherlock said. "And he's never lost the certainty, the obsession that the drug really could work. Nice of him to give us his number. Let's arrange a little meeting."

John's phone rang and he picked it up. It was Louise Mortimer. He frowned in confusion. Why would she want to talk to him? She'd walked out on him.

"Hello?" He said. "Who's this?"

"You've got to find Henry!" Louise chocked out. She was crying.

"Louise, what's wrong?" John asked.

"He was remembering and then...he tried...he's got a gun, he went for the gun and tried to..." She broke down in tears again. "He's gone. You've gotta stop him. I don't know what he might do."

"Where are you?" John asked.

"His house, I'm okay, I'm okay." Louise said.

"Right, stay there, we'll get someone to you, okay?" John said. He hung up.

"Henry?" Sherlock said.

"Attacked her." John said.

"Gone?" Sherlock asked.

"Mm." John nodded.

"There's only one place he'll go to, back to where it all started." Sherlock said. He dialed Lestrade's number. "Lestrade, get to the hollow. Dewar's Hollow, now! And bring a gun!"

Sherlock sped over to the hollow in the jeep. Lestrade hadn't caught up with them yet. They parked the jeep and raced down to the hollow. Henry had a gun in his mouth.

"No, Henry, no, no!" Sherlock shouted.

"Get back, get away from me!" Henry yelled, frightened he was going to hurt them.

"Easy, Henry, easy, just relax." Alex said in a gentle, mothering voice.

"I know what I am, I know what I tried to do!" Henry yelled.

"Just put the gun down. It's okay." Alex said.

"No, no, I know what I am!" Henry yelled.

"Yes, I'm sure you do, Henry." Sherlock said. "It's all been explained to you, hasn't it? Explained very carefully."

"What?" Henry asked.

"Someone needed to keep you quiet, needed to keep you as a child to reassert the dream that you both clung on to, because you had started to remember." Sherlock said, choosing his words carefully. "Remember, now, Henry, you've got to remember. What happened here when you were a little boy?"

"I thought it had got my dad! The hound! I thought...oh Jesus, I don't know! I don't know anymore!" Henry said, putting the gun back in his mouth.

"Henry, no! Henry, for God's sake!" John said.

"Henry, remember 'Liberty in' two words!" Sherlock said. "Two words a frightened little boy saw here 20 years ago! You'd started to peice things together, remember what really happened that night. It wasn't an animal, was it Henry. Not a monster, a man. You couldn't cope. You were just a child. So you rationalized it into something very different. Then you started to remember so you had to be stopped. Driven out of your mind so that no one would a believe a word that you said."

"Sherlock!" Lestrade called. He was here.

"It's okay." Alex whispered, taking the gun out of Henry's shaking hand.

"But we saw it, the hound last night, we did!" Henry said.

"Yes, there was a dog, Henry, leaving footprints, scaring witnesses, but it was nothing more than an ordinary dog." Sherlock said. "All three of us saw it, saw it as our drugged minds wanted us to see it. Fear and stimulus, that's how it works. But there never was any monster."

A dog suddenly howled. It was growling and prowling around the hollow. It was big and looked like a cross between a pitbull and a mastiff.

"Sherlock!" Alex said.

"No! No, no, no, no, no!" Henry yelled.

"Henry, Henry, calm down." Sherlock said.

Henry kept screaming while the hound growled. Alex clung to Sherlock, who had his arm wrapped around her.

"Right, he is not drugged, Sherlock. So what is that?" John asked.

"What's that?" Alex yelled.

"All right, it's still here! But it's just a dog, Henry!" Sherlock said. "It's nothing more than an ordinary dog."

"Oh, God!" Alex said.

Sherlock and her suddenly hear heavy breathing a whirled around. A man with a oxegyn mask was walking towards him. Alex could see his eyes and they looked frighteningly familiar to her. She ran up to the man before Sherlock could stop her. 

"Alex, no!" He yelled.

Alex ripped off the mask and screamed. Her old boyfriend, David, was grinning insanely at her. Sherlock ran up to her, seeing something completely different. He saw the face of Jim Moriarty. Alex, however, was fighting a battle with her mind.

"No! It's not you, you're not here! I'm safe now, you can't hurt me anymore!" She said. "Sherlock's here, he won't let you hurt me!"

'David' reached out to grab her and that was when Sherlock was pulled out of his trance. He attacked him and pushed him away from the fog. Moriarty/David instantly changed to Dr. Frankland.

"The fog." Sherlock murmered.

"What?" Alex asked, still traumatized by seeing her old boyfriend once again.

"The drug, it's in the fog!" Sherlock said. "Aerosol dispersal, that's what it said in those records! Project Hound, it's in the fog, it's a chemical minefield!"

"For God's sake, kill it! Kill it!" Dr. Frankland said, looking to the hound.

Lestrade shot at the dog, but missed. Alex, who had never had expierience firing a gun before, used the gun she'd grabbed from Henry to try and shoot the dog, but she couldn't do it. John grabbed the gun and shot it. Everyone was panting. Sherlock turned to Alex.

"You alright?" He asked.

"I'll be okay, yeah." Alex nodded. 

"Look at it, Henry." Sherlock said, pushing Henry towards the dog.

"No, no, no." Henry shook his head.

"Come on, look at it!" Sherlock said.

He shined the flashlight on the dog. Alex got down on her knees and examined it. It looked like a black lab-pitbull mix to her. It was a very beautiful animal.

"Kind of a shame we had to kill it." She murmered to herself.

Henry turned to Dr. Frankland and attacked him, knocking him to the ground. "You BASTARD! WHY DIDN'T YOU JUST KILL ME?!"

"Because dead men get listened to." Sherlock said. "He needed to do more than kill you. He had to discredit every word you ever said about your father, and he had the means right at his feet. Chemical minefield, pressure pads in the ground, dosing you up every time you came down here. Murder weapon and scene of the crime all at once. Oh, this case, Henry, thank you! It's been brilliant!"

"Sherlock." Alex said, quietly.

"What?" Sherlock said.

"Timing." Alex nodded to Henry, who John and Lestrade were comforting and calming down.

"Not good?" Sherlock asked.

"No, no, it's okay, it's fine." Henry said. "Because this means...this means that my dad was right! He found something out, didn't he? And that's why you killed him! Because he was right and he found you right in the middle of an experiment!"

They heard the dog growling again and it got up and rang away. It must have not been hit at all and was playing dead.

"I THOUGHT YOU WERE DEAD!" Alex yelled at it. Dr. Frankland took the distraction as an opportunity to run away. Sherlock and Alex chased after him.

"FRANKLAND!" Sherlock called. "FRANKLAND! Come on, Alex, keep up!"

"It's no use, Frankland!" Alex said.

Frankland jumped over a barbed wire fence. He stepped on something that started beeping at him. He was in a minefield. He sighed and lifted his foot up.

Sherlock, Alex, and the others, who had joined the chase stopped when they saw the explosion. Alex cupped her hands over her mouth. She and Sherlock turned to each other and sighed.

"We should probably head back." Alex said. "We've had a long night."

They trudged back to their cars, Henry hitching a ride with Lestrade. Sherlock, John, and Alex went back to their hotel. Alex literally fell into her bed when she and Sherlock got into their room. Lou pawed at Alex's face and she giggled. Sherlock sat on the edge of her bed and stroked Alex's hair.

"Sherlock, I am so tired. I'm never doing another case with you again." She said.

"You don't mean that." Sherlock chuckled. His facial expression then turned worried. "You're joking, right?"

"Of course I am. This is the most fun I've had in years." Alex said. "Goodnight."

"Goodnight." Sherlock said, curling up next to her.

"What are you doing?" Alex asked. "You have another bed right there."

"I don't want to walk anymore." Sherlock said.

"No, go in your own bed." Alex said.

"No." Sherlock whined like the huge baby he was. 

"Fine. But this is the last time." Alex warned. 

"Deal." Sherlock said, curling himself around Alex. She sighed in defeat and nuzzled him.

"For the last time, goodnight." Alex said.

"Goodnight." Sherlock smiled.

--------------------------------------

I'm basically done with this episode. Lol, the part where Alex shouts, "I THOUGHT YOU WERE DEAD!" is me when I play video games and I thought I killed something and it just comes back to life. I haven't even seen Ghostbusters but I know the song because of Just Dance.