The Uninvited.

The Uninvited is an ITV science fiction television mini-series first shown in 1997 as four fifty minute episodes. The series was made by Anglia Television. It was created by Leslie Grantham, who also features as a police officer with a secret. Steve Blake is a photographer who sees the head of British Nuclear Power killed in a horrific car crash, but then turning up alive and well. The village of Sweet Hope contains a mystery: it collapsed into the sea and the population was apparently saved by two police officers. Blake tries to investigate what has happened to the survivors who have all gone on to obtain positions of power within the British establishment. When Blake visits the submerged village he discovers a chilling secret...