When the charges against Robert Colson, a prominent attorney accused of murdering his former girlfriend, are dismissed at a preliminary hearing, the detectives and patrol officers look for ways to put pressure on Colson's brother and his family to get one of them to flip on him; Andrea takes a personal interest in the story, which keeps David's name on the front page and causes friction with her mother; Joel, who also has taken the case to heart, risks his life as he obtains the evidence that will close the case legitimately after he disagrees with Ray's planting evidence against Colson's sister-in-law to use as leverage.
Donnie Wahlberg
Detective Joel Stevens
Neal McDonough
Assistant District Attorney David McNorris
Mykelti Williamson
Police Department Detective II Bobby 'Fearless' Smith
Gary Basaraba
Police Department Police Officer III Ray Hechler
Lana Parrilla
Teresa Ortiz, paramedic in season one, rookie police officer in season two
Jason Gedrick
Police Department Police Officer II Tom Turcotte