Season 6 · Episode 4

Third Watch: Obsession

Faith gets an earful from her daughter for not being around, and discovers that Emily's decision not to attend her mother's promotion ceremony was calculated to drive home a point about all the events Faith missed over the years; Finney threatens to blow Sasha's cover if she doesn't get the goods on Maritza; Sully and Sasha get more than they bargained for when they investigate a domestic and discover a decomposing corpse in the apartment directly above the quarreling couple, leading Sully to teach Brendan a lesson about the less glamorous aspects of police work; starting her career as a detective by partnering up with Jelly, Faith pursues her hunch that there's something more to what appears to be a simple suicide, and uncovers the deceased's plan to commit murder with a mail bomb; Grace teases Carlos about dating Holly, while expressing some interest in Brendan; Ty tries and fails to get more information from an uncooperative Sully after Brendan tells Ty that their fathers and Sully