The thriller, directed by D.J. Caruso (Disturbia), features a woman played by Beckinsale, who moves her family to a disturbing yet beautiful house in the country.
She discovers a secret room in the attack that reveals the house's terrifying past.
Till, 24, was cast to play a carpenter who works on the family's home.
The screenplay was written by Wentworth Miller, and the film is being produced by Geyer Kosinski and executive produced by Tucker Tooley and Demarest Films.
Shooting is scheduled to begin Sept. 8 in North Carolina. No release dates have been announced.