The project focuses on a New York party girl called Jo who re-evaluates her life when she is reunited with her 18-year-old son.
Deadline reports that Collins has now signed up to play the son. He will star opposite Jordana Spiro, who has already joined the cast as Jo.
Collins's role had been given to Gary Clayton, but Clayton was reportedly replaced following a table read.
Collins previously played Mike in The War At Home. He also starred in Jack & Bobby and has had guest roles in Without A Trace and Community.
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