NEW YORK (Hollywood Reporter) - "ER" veteran Julianna Margulies, British actress Emily Mortimer and "Little Miss Sunshine" Oscar-winner Alan Arkin have joined Andy Garcia in the indie family comedy "City Island."

Garcia plays Vince Rizzo, a Bronx prison official who realizes that an inmate (Steven Strait) is his secret love child. His efforts to become his guardian lead to comic complications. Margulies plays Rizzo's wife, Arkin plays a teacher in his acting class, and Mortimer plays a fellow student he befriends.