Barry Bostwick, Mariette Hartley, Ed Hyland, Mollie Milligan, Meg Foster, Cal Bartlett and Colton Tapp will star in indie drama “Three Days in August,” Variety has learned exclusively.

Shooting begins Monday in Dallas. Johnathan Brownlee, whose credits include “Decoding Annie Parker” and “Occupy, Texas,” is directing and producing through his Ubiquimedia banner along with Adam Donaghey. Exec producers are Shannon Kincaid, Allen Stringer and David Kiger.

The script, written by Chad Berry and David Langlinais, centers on a woman who was given away at birth by a 16-year-old mother and is searching for her identity and birth parents, and what happens when she finds them.

The script won The Sionna Project screenwriter competition in August. Berry and Langlinais received a $10,000 cash prize, a world premiere at the Dallas International Film Festival in April and a guaranteed national theatrical release from Studio Movie Grill.

It’s the first screenplay for Berry, who has been an advertising writer and creative director. Langlinais’  short story collection “Duck Thief and Others Stories” is due out in the fall.

The Sionna Project started in April during the Dallas International Film Festival and drew over 200 submissions. The five finalists completed a first draft consisting of 90 pages.

Bostwick is best known for starring in “The Rocky Horror Picture Show” and “Spin City.”