Frank goes on Sean's class field trip and has to deal with a strict teacher who's more interesting in keeping the kids in line than having fun.
Danny gets a phone call from Jill, a woman who says she's going to kill the drunk driver who killed her parents but got out on a technicality and then kill herself.
Danny manages to track her down and stop her before she shoots him and herself.
Jamie is hit on by Mia, a bike courier only to find out he's given her a wrong # and has passed on a fake $50 bill. He tracks her down and finds out she's delivering for a counterfeiting ring.
Jamie considers portraying Mia's boyfriend to go undercover but thinks better of it and calls in the Secret Service who are impressed with his work.
Jamie talks to Frank about possibly becoming a detective.