The night passed with thermoses of the GRS' black coffee and an abundance of sketchbooks. Selena sat on the couch, the sketchbook propped on her lap as her hand moved constantly, drawing the pen across the page. Marcus sat next to her, studying Selena's brain scans in between tearing out pages of the sketchbook once they were full or switching out the pens once they ran low on ink. Soon the floor was littered with the torn sheets of paper, crowded with drawings of flowers, guns, wounds, buildings, chairs, and everything else imaginable – and some that weren't so imaginable. Sam had had no wish to see what happens when a human skull is shattered beyond repair. Even just as a drawing, it looked horrific.

He and Raj sat nearby, examining Selena's drawings, looking for something promising, some sort of lead. But nothing stood out to them, nothing that seemed to bear similarity to Jake's death.

As morning dawned, Sam leaned back and stretched. Selena was still drawing, Marcus furrowing his brow over the brain scan. Sam wanted to ask what he found so interesting in the brain scan, but a glance down at his planner distracted him.

He had a quiz in classic myths the next day.

Groaning, he pulled up the PowerPoint slides for the class, taking his folder out of his notebook. He opened it and glanced at the syllabus to find the material to review. Marcus had laughed at him for printing out the syllabus, but Sam found it more convenient than trying to open it on his computer every time he needed it.

"Hey, Sam," Raj said in a low voice. "You said that the Grim Reaper had planted evidence for Elias Gates, right?"

"Yeah," Sam said, glancing over at his roommate. He had mentioned it sometime during the night. "What about it?"

"Turns out Elias Gates was found dead on Halloween," Raj said grimly. "I don't think that's a coincidence."

Sam frowned. Both Gates and Slit-Gag connected to Halloween. And the Grim Reaper seems pretty damn determined to have caught both before the deadline. He planted evidence for one and recruited me for the other. What's up with this?

He thought of Cate and the Grim Reaper's quiet conversation about a mysterious "she," and about Cate saying Gates had called his victims a gift. What is going on here?

Sam glanced down at the folder on his lap, his eyes catching on the About the Professor section which Sinclair had included. His eyes widened.

No way.

Tossing aside the syllabus, Sam opened the PowerPoint slides for last Friday's lecture and scrolled through until he found the image he was looking for. Excitement and disbelief warring inside him, he rummaged around in his backpack until he found Selena's pad of paper he had taken from Caffeinated after her arrest.

Her drawing of a dagger matched up perfectly with the dagger on Sinclair's slide.

"Guys," Sam said in a low voice. All the pieces which had been floating around since this all started slammed into place with such force and clarity he marveled he hadn't noticed any of this before. "I think I just found Slit-Gag."

Marcus' and Raj's heads snapped around to look at him, Selena still focusing on her sketchbook. It was like she was in some kind of trance. "What?"

Cate and the Grim Reaper chose that moment to appear. "Anything?" Cate asked, looking tense.

"Sam knows who Slit-Gag is," Raj told her breathlessly.

"Let's hear it!" the Grim Reaper demanded. "Now!"

Sam took a deep breath. "Okay. So, it turns out that my classic myths professor, Charles Sinclair, did his undergrad at the first university Slit-Gag struck, his masters at the second, and his PhD at the third. And now he's here, as a professor." He glanced around. "And Jake was in one of his classes. Besides that, Selena drew this picture of a dagger after I asked her to try and remember any details about Jake's death. Sinclair showed us a bunch of ancient Greek weapons and he had a modern version of that very same dagger." Sam tossed the pad toward the Grim Reaper. "I don't think that's a coincidence." Something else struck him. "And I just remembered why Richardson looked so familiar. He's also in my class – Sinclair told him to come to office hours. Jake was supposed to go to office hours!"

"So your classic myths professor killed Jake and Richardson?" Marcus asked. "Damn."

Cate and the Grim Reaper exchanged a look. "It looks pretty solid," he admitted. "He has what appears to be the weapon, he knew both victims, and he was in every location." He glanced at Selena. "She come up with anything?"

"Not yet," Marcus said. "We've probably got at least a dozen other murders, but not the one we're looking for."

"So, what now?" Raj asked. "We go arrest Sinclair?"

"It won't be that easy," the Grim Reaper said. "We'll have to find him first. He's probably –"

"Wait," Sam interrupted, peering at his laptop screen. "Just got an email. Sinclair says he's not going to be at office hours today."

Cate pressed her lips together. "He probably cancelled class, too."

"So how do we find him?" Sam asked. "Can't you use your magic, Cate?"

"Unfortunately, it's not that easy," she confessed. "Besides, if he is Slit-Gag, he's got a Norn working to conceal him and the power of Halloween on his side. This won't be good."

"Before we get caught up in all this," the Grim Reaper interjected. "Sam, we found out why you have no records."

"What?" Sam asked. "Why?"

"CDAs are assigned at conception," Cate explained. "And it appears that yours, while assigned, never filed a record of your birth, meaning you don't show up in our records."

"I did some digging on Selena's mother, Gabrielle," the Grim Reaper continued. "Took her name to the Norn Oversight Council. Turns out they're familiar with her name. She disappeared one night, left her work behind. The files they did have, on an unnamed male, match up with what your mortal records claim about your life."

"So Selena's mom was supposed to be my CDA?" Sam demanded. "How messed up is that?"

"Very," Raj muttered.

"I might have something," Selena said suddenly, straightening on the couch. All heads snapped in her direction as she blinked down at the sketchpad on her knee. "Same MO: dagger, gag, music."

"Where?" the Grim Reaper demanded.

Selena gestured to her sketchbook as Sam peered over her shoulder. A body lay on a table, chairs pulled out on either side. To one side were what appeared to be bookshelves, everything drawn in accurate but bare detail. There was a door in the background, a vague shape sketched beside it.

"What did you see?" Cate asked, as everyone looked at the drawing.

"There was another person in the background," Selena said. "A girl. I got the sense she's another victim, not a perpetrator. Looks around our age, so probably another college kid. There were desks around, bookshelves, like it was some sort of study area. I didn't see the killer, but I heard music and voices. There were more than one."

"How could you kill someone in a study area and not have anyone else know about it?" Raj wanted to know. "They're not exactly hiding places. And bookshelves only exist in...."

Sam blinked, recalling the tunnel that led away from the basement of the student union, one of the two oldest buildings on campus. They had never made it down the tunnel because of the Restless Dead, but what if....

"Raj," he said slowly. "You said the library was built the same time as the student union, correct?"

"Yeah, but...." Understanding dawned in Raj's face. "Of course," he breathed. "The lowest level has been closed this past semester due to some problem or other, I forget what. I've been there, it's pretty creepy, just like the union's basement."

"The tunnel leads there," Sam said decisively. "It has to. And Sinclair knew about it. What are the odds he killed Jake on one side of the tunnel and this other kid on the other side without it being connected?" He rounded on Selena. "Did you see who the kid was?"

Selena shook her head. "I mean, I saw him, but I don't know who he is."

"Get your swords," the Grim Reaper ordered. "We're heading to the library to end this before there are any more deaths."

Sam snatched up his sheathed sword as Selena and Marcus rose from the couch. Cate handed Selena another sword as the boys buckled their sheaths to their belts, Sam feeling both excited and frightened out of his mind. Enough adrenaline was pumping through his body to motivate a thousand people to sprint a marathon without ever stopping. He felt like he'd just drunk too many espressos in a row.

Cate grabbed his hand, her fingers tightening around his as she grabbed Raj. The Grim Reaper took both Marcus and Selena, his expression stony. "Let's go," he told his sister. "One, two...."

"Three," they finished together, and tore into the Void, dragging the college students with them.

They landed on the hard floor of the lowest level of the library, one of the basement levels. Selena, Marcus, and Raj staggered a little but Sam was able to keep to his feet, eyes instantly scanning the dim space. He immediately recognized the desk in Selena's drawing – mostly because the body was lying on it.

It was the kid from his classic myths class, the guy who always made jokes.

In a locked study room, cowering against the glass, was Cecily, the girl who had been hitting on Sinclair. Her hair and clothes were a mess, her makeup running from the tears staining her face. She didn't even seem to register their appearance out of thin air.

"Ah," a British voice said, as Sinclair stepped around from behind the bookshelf. The Greek dagger was in his hand, covered in blood from his dead student, blood spattering the front of his white shirt. His sleeves were rolled up, revealing the blood on his hands and wrists. "So I see you did find me after all. I was hoping you'd arrive a little bit later, Thanatos, but it doesn't matter. You can't change anything now."