S2, E6: Already suspicious that Sheila may not be pregnant, Tommy solicits some advice from Laura before setting out to find proof. Continuing to ignore his brother Johnny's warnings, he pushes ahead with his plan to kidnap his other two children. However, Tommy's plans are dashed when the FBI agent who is his sublet apartment's legal tenant orders him to move out because of the neighbors' complaints. Meanwhile Sean's colleagues warn him against dating a woman who is sleeping her way through the entire fire department. And as Jerry struggles to find a way to talk to his gay son, Peter, Lou attends a reception for bone marrow donors and survivors, only to find that Leon, the man whose life he saved, isn't especially grateful. After learning his name, Tommy calls on Sheila's obstetrician, who reveals the truth about the miscarriage. But before he can leave, Tommy is confronted by the ghost of his cousin - Sheila's late husband, Jimmy -- who dishes out a brutal beating as he insists that he do whatever it takes to get her pregnant again. Ignoring the demand, Tommy heads for Shelia's house instead and, with a frightened Colleen looking on, he angrily confronts Sheila with the truth. Meanwhile, as Lou decides to let Leon know how he feels about being snubbed, Jerry learns that Sean's new girlfriend, Heather, is a firebug. So, as Sean dumps Heather after confronting her about the fires she's started, Jerry finds the courage to ask Peter about what it's like to be gay. When he can't find his pain medication, Franco takes it out on his daughter, Keela, unaware that Tommy has been stealing his pills. However, the drug-addicted firefighter's rage turns to fear after he discovers Keela unconscious from an accidental overdose. Accused of being ungrateful for the bone marrow donation, Leon offers to make things right by taking Lou out for a drink. But when he then tries sticking Lou with the tab, things sour between them. Finally, with Colleen's help, Tommy kidnaps Katy and Conor from their school. But before long, they have him questioning whether he's made a mistake. And when the firefighters answer a call at her apartment, Sean is stunned to find that, as a result of their break up, Heather committed suicide.