In the series premiere of Training Day, a young, idealistic officer, Kyle Craig (Justin Cornwell), goes undercover for the LAPD to keep tabs on Frank Rourke (Bill Paxton), a jaded, rogue detective and maverick leader of the Special Investigation Section (S.I.S.).
But who's really training who here? Check out a sneak peek of the very first episode called "Apocalypse Now."
Watch Training Day on Thursdays at 10/9c on CBS and CBS All Access.