Keri Russell

Keri Russell has joined Brendan Fraser and Harrison Ford in CBS Films' first movie, an as-yet-untitled medical drama.

Based on a true story, the film revolves around John Crowley (Fraser), who joins forces with Ford's unconventional doctor to find a cure for his children's rare genetic disorder. Russell will play Crowley's wife, Aileen, who tries to build a normal home life for the children.

"At the heart of this story is an exemplary mother in Aileen Crowley," said CBS Films chief Amy Baer. "It was important that we find an actress who could portray incredible maternal sensitivity combined with the steadfastness of a woman on a mission. Keri has the talent to depict both with striking balance."

Production will begin April 6 with Tom Vaughan (What Happens in Vegas) set to direct.