Jeanne Tripplehorn and Embeth Davidtz have joined Kate Beckinsale and the all-star cast of Winged Creatures for Unruly Films.

Directed by Rowan Woods, the story follows the witnesses to a brutal murder suicide in a fast food restaurant as they cope with the aftermath of the incident and how they affect the people who help them along the way, says The Hollywood Reporter. Forest Whitaker, Dakota Fanning, Guy Pearce and Jackie Earle Haley already have been cast. Tripplehorn is playing Fanning's mother, trying to help her daughter recover from the incident. Davidtz is a wife suffering from migraines who places her husband's needs above hers.

No production schedule has been set for Winged Creatures.