Based on the acclaimed 2014 short film by Rod Blackhurst and Bryce McGuire, the film stars Wyatt Russell (The Falcon and the Winter Soldier) as Ray Waller, a former major league baseball player forced into early retirement by a degenerative illness, who moves into a new home with his concerned wife Eve (Oscar® nominee Kerry Condon, The Banshees of lnisherin), teenage daughter Izzy (Amélie Hoeferle, The Hunger Games: The Ballad of Songbirds and Snakes) and young son Elliot (Gavin Warren, Fear the Walking Dead). Secretly hoping, against the odds, to return to pro ball, Ray persuades Eve that the new home's shimmering backyard swimming pool will be fun for the kids and provide physical therapy for him. But a dark secret in the home's past will unleash a malevolent force that will drag the family under, into the depths of inescapable terror.