...Three days ago...

...Karaoke...

Castle wanted to see how well Terminators can sing as it has never been done before.

"Swing left, swing right," T-11 sings in a low voice. "Bleedin', hold on tight, don't walk away."

Castle sat down.

"Nice to see you could join us, Mr Castle," Derek Reese greets Castle.

Castle gasps.

"Derek Reese?" Castle said, surprised.

"Yes," Derek said.

Castle held his hand out.

"I am honored to meet you," Castle said.

"One black eye," T-11 continues to sing, changing to a country like tune.

Damn, Castle thought, he's got quite the voice.

"Because we are undefeated!" T-11 sings, holding his fist out.

"With our backs to the wall!" A few of the other guys join in.

Castle can see there are cameras when he shook hands with Derek.

"My dad bought all your books," Derek said. "Big fan of yours."

"The whole family is fans of mine?" Castle asks.

"Not my mother," Derek said.

"Ah," Castle said. "I was about to make a joke they were all Castles like James Patterson's promos."

"They can't take our..." T-11 sings.

"Hooooppe!" The rest finish.

"Would have been funny if I knew what you are talking about," Derek said.

"You are missing out on a lot of stuff," Castle said.

"Not really," Derek said, shaking his head. "I met my brother's kids yesterday."

"Ah, the kids," Castle said, with a warm smile.

"You know one of them is named after my brother," Derek said.

"Oh really?" Castle asks.

"Yes," Derek said.

"There is two of them," Castle said.

"Yeah," Derek said.

"What's the other named?" Castle said.

"Sarah Brewster," Derek said. "I heard John's wife proposed him instead of him proposing to her."

"Ah, that is interesting," Castle said. "It is sweet how John named the kids after his parents."

"I like to think my brother strongly insisted to Sarah that one of their kids be named Kyle when she confided to him about the pregnancy," Derek said. "Kyle is a little self-centered with that loyal ass of his."

"We all have that," Castle said, with a chuckle and a nod.

"Hah, but some have a bad case of it," Derek said.

"The guy Nikki is partnered up with," Castle said.

"Yeah?" Derek said.

"He is based on me," Castle said.

"No way," Derek said.

"Yes," Castle said. "It is the honest truth."

"Hey, Mr Castle!" T-11 calls out. "Your turn!"

"I don't sing," Castle denies.

"I saw you sing in the showers," T-11 said.

"...Fine," Castle said, taking the microphone. Castle walks on stage where he hears applause. "I will sing 'I don't dance'."

John came in then sat beside Derek. Did Castle really know the lyrics to a High School Musical song? Yes, he did. Sure, his daughter was obsessed with it when she was a pre-teen so because of that Castle heard it a lot. But this song requires two singers not one. He looks over searching for a co-singer.

"I need a singer," Castle said. "One who is pro dancing!"

Jessica is the only person to raise their hand up.

"I love dancing!" Jessica shouts.

"Good," Castle said, taking out another microphone. "Come up, you are singing with me."