Four months have passed since the death of Jimmy Salvo. Bobby's working odd jobs while he's been suspended pending IAB's investigation. Bobby stops by the station to talk to Andy, while there he notices that Gina's showing signs of pregnancy. She hasn't formally announced it and is reluctant to let James do the right thing. Bobby tells Andy about the FBI seeing him the other night, he wants to set up a plan to make things right. Meanwhile the detectives investigate a couple of routine homicides. Bobby tells Lt. Shannon about Andy's presence. Jill works her source, Leo Cohen, to try and get information out about the pending indictments against Andy and Bobby. The FBI tells Bobby he is on his own. They had other plans for Lt. Shannon, after Andy had given his testimony. When the squad is called to a scene, where the suspect in Andy's case is holed-up, a shot is fired in Andy's direction. Shannon is identified as the shooter. The whole mess gets unraveled; it is revealed that the 15th squ