The latest spook-'em-up from producer Jason Blum and the horrormovie magnates of Blumhouse is their haunted swimming-pool movie. Based on a celebrated 2014 short, this extrapolated feature follows an all-American family who discover their pool is home to a malignant spirit.
's journey to feature length, ) found himself profoundly unsettled by its original iteration: ‘He was swimming in his pool that night afterwards and thought he saw a figure from the short film standing there,’ writer-director Bryce McGuire tells . ‘The next day when I met with him, [he said] “Dude, your short scared me. We have to talk.”’