In the fourth-season finale, Sheila learns that Jimmy's ghost has been spotted on several occasions, so she investigates. Meanwhile, Colleen blames Tommy for her failed relationship; Franco and Natalie come to an understanding, as do Lou, Cousin Mike and Latrina; and Tommy spends time with his father.
Elenco: Denis Leary , James McCaffrey , Adam Ferrara , Daniel Sunjata , Larenz Tate , Tatum O'Neal , Jack McGee , Andrea Roth , Steven Pasquale , Robert John Burke , Natalie Distler , John Scurti , Diane Farr , Mike Lombardi .