When Jess invites her crush, a music teacher at her school, to Thanksgiving dinner at the loft, things don't go as planned.
Lupo and Bernard discover that two scientists who were found dead in a fire were stabbed beforehand.
Cheryl and Dana figure out a way to get out of the locked garage because they ignored Jim's lesson on how to open the door from the inside.
Zach dumps the girl he's dating when she obsessively sends him text messages and goes to Billie to seek relationship advice. Davis also asks Billie's dating advice.