smirking at Phillipa from the window as it drives away. Cast Thora Birch as Elizabeth "Liz" Dunn Desmond Harrington as Michael "Mike" Steel Daniel Brocklebank as Martin Taylor Laurence Fox as Geoffrey "Geoff" Bingham Keira Knightley as Frances "Frankie" Almond Smith Embeth Davidtz as Dr. Philippa Horwood Steven Waddington as DCS Tom Howard Gemma Craven as Mrs. Dunn Anastasia Hille as Forensic Pathologist Gillian Kelly Hunter as DI Chapman Production Nick Hamm began casting actors at the end of 1999. Hamm described newcomer Keira Knightley as a young version of Julie Christie. To prepare for the role, Thora Birch visited an English public school. Principal photography began on 2 July 2000 and ended on 9 November 2000 lasted six weeks and took place around London and southern England. Specific locations included Downside Boarding School in Somerset and Bray Studios. The film was shot in Super 35 format. Reception On Rotten Tomatoes, the film has an approval rating of 53% based on reviews from 17 critics. Michael Thomson, in a review for the BBC, said the film was a "dark, grisly adventure" influenced by William Golding's novel Lord of the Flies, with the hole substituting for the island setting. He criticized the camerawork and some of the dialogue, but praised Thora Birch. References External links 2001 films 2001 thriller films 2001 psychological thriller films 2000s mystery thriller films 2000s psychological thriller films 2000s teen films British mystery thriller films British psychological thriller films British teen films Films about murderers Films about pranks Films based on British novels Films based on young adult literature Films directed by Nick Hamm Films scored by Clint Mansell Films shot at Bray Studios Films shot in England Teen mystery films Teen thriller films 2000s English-language films 2000s British films Films set in bunkers