Chicago P.D. Season 3 Episode 7
A Dead Kid, a Notebook and a Lot of Maybes
The team investigates a Columbine-like threat at a private school. Atwater seeks out a mentor; Olinsky's marriage faces a crisis.
Guest Stars
Kieran Campion
Darren Sanders
Samuel Hunt
Greg 'Mouse' Gerwitz
Ron Turner
Sikes
Danny Irizarry
Colin Blake (uncredited)
Patrick Dunham
Subway Commuter (uncredited)