Ray and Katherine testify against the cop killers; David comes out of rehab and gets straight onto the case despite his recent alcoholism.

After a fixed jewelry robbery and arrest, it becomes clear that the LAPD have a group of bogus cops on their turf authentic enough to fool other officers. Joel and Fearless investigate when Teresa discovers a body at the police academy.

A group of robbers take hostages at a shopping mall, including Teresa.

After a corpse is found entombed behind a wall in a building's basement, the detectives suspect a 1980's fraternity who once used it as their home and had a reputation for extreme discipline.

The disappearance of a failed actress leads the officers, including a guilt ridden Tom, to look into the part of a has-been director who was the last person to see her alive.