The independent drama by Robyn Harding follows a man (Ritter) as he meets his father's new wife (Lahti) at a family lake house.
Andrew Currie will direct.
Lahti directed the short film "Lieberman in Love," which won the Academy Award for Best Short Subject. Her screen credits include "Hawaii Five-0," "Law & Order: Special Victims Unit," "Jack & Bobby" and "Chicago Hope." She has appeared on Broadway in Loose Ends, Division Street, Scenes and Revelations, Present Laughter and The Heidi Chronicles.