Based on the horror novel by James Herbert.
A body double was used for Kate Beckinsale's nude scenes.
The steep cobblestoned street used twice in the first ten minutes is Keere Street in Lewes (East Sussex).
The locomotive hauling the train at the 12:50 mark is a Maunsell S15-class 4-6-0 operated by the Bluebell Railway and is shown arriving at Sheffied Park station.
Kate Beckinsale's first horror film.