moves in with Tommy and begins seeing Theresa, a soon-to-be ex-nun with whom he plans on moving to Florida to be first mate on his cousin's boat. Chief Reilly tries to meet his wife's increasing health care costs by taking a second job at a bar. Later, he suffers a heart attack after having sex with Karlene, an illegal Jamaican immigrant who is a caretaker at the long-term care facility where his wife now lives. During a stakeout, Johnny is killed by someone who was contracted to stop him from testifying against a powerful drug dealer Johnny had arrested months beforehand. During his funeral, Sean and Maggie decide to get married at the cemetery. Tommy, Johnny, and Maggie's long lost sister Rosemary Gavin is introduced; she is deaf and had been shunned by her parents, but reconciles with her father. Uncle Teddy, still in prison, receives numerous letters from a woman named Ellie, who is proud of the action he took upon Connor's killer. The two begin a relationship and get married, which allows Ellie to meet with him for conjugal visits. With the 62 Truck crew seemingly breaking up, Tommy decides to retire and move in with Sheila in her new home on Long Island. He changes his mind after talking with Janet about her pregnancy and discovering that his crew will remain together after all. (Mike isn't transferring, Lou has changed his mind about the boat after discovering he lacked "sea legs", and Franco has failed a lieutenant's exam.) Jerry defends his crew when several officials visit his firehouse. While at Sheila's new house, Tommy tells her he is not retiring from the FDNY. Distraught, she drugs him again and accidentally starts a fire. The fire spreads while the frantic Sheila is overwhelmed by frustration, and the finale closes without making it clear if Tommy survives. Season 4 Season 4 premiered on June 13, 2007. Tommy and Sheila are apparently rescued by volunteer firefighters, but are then accused of arson and insurance fraud. Janet has given birth, and while Tommy has come to accept it as his own, the baby's hair finally comes in and it is "jet black" in color, leaving them to now believe that it is Johnny's son, instead. Teddy is released from prison and immediately abandons his new wife Ellie in a coffee shop. Colleen runs away from home and moves in with her