Haunted by a promise he made to an old friend, Fearless risks his life to protect a little girl who is the only cooperating witness to a mob hit; Ray and Tom investigate a stolen corpse that was shot through a cannon and landed in a hot tub.
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