The movie, currently in production, is being directed by Peter Askin and sees Allen play a woman named Darcy, who discovers the sinister and gruesome double life that her husband and the father of their two children, played by LaPaglia, has been living.
Stockman is playing their son, a man who made a name for himself in the advertising world and is enjoying his newfound success.
King wrote the screenplay.
Stockman has appeared in shows such as Blue Bloods, Private Practice, CSI, Nurse Jackie and 30 Rock. He also appeared in Broadway productions of American Idiot and Hair.
He is repped by APA and Gregory Russell at Regarding Entertainment.