Answer the following question: Build a movie plot around this: Why were the police called? Possibly in response to Lucas' disappearance
Answer:
This article's plot summary may be too long or excessively detailed. Please help improve it by removing unnecessary details and making it more concise. (October 2014) (Learn how and when to remove this template message)The film opens with the appearance of a dishevelled, blood-soaked Liz (Thora Birch), one of four private school pupils, also including Mike (Desmond Harrington), Geoff (Laurence Fox), and Frankie (Keira Knightley), who have been missing for 18 days. Liz is interviewed by a psychiatrist, Dr. Philippa Horwood (Embeth Davidtz), and describes what has happened to the four.Liz describes how she told Martyn (Daniel Brocklebank) about her unrequited love for Mike; Martyn promised to help, as he and Liz were best friends. Martyn took his four classmates, musician's son Mike, his best friend Geoff, Liz and popular girl Frankie to an abandoned underground nuclear fallout shelter, where they decided to stay in order to avoid a school field trip. The four students climbed into the shelter, Mike reluctantly, and Martyn locked the door shut.When Martyn was due to release them, the locked-in students belatedly realized they were trapped and began to turn on each other. Then they discovered that Martyn had hidden microphones in the shelter. Voice-acting, Frankie pretended to be sick, while Mike and Liz pretended to hate each other because Liz had said that this was what Martyn wanted he had been in love with Liz "since we were eleven". The plan apparently worked, as one morning they woke up and the hatch was open. They all climbed out, and Liz described how Mike hugged her, thanking her for saving them.However, soon after Liz finishes her story, the psychiatrist tells someone on the phone that she does not believe Liz's story, while Liz waves happily to her from the window behind her.Martyn has been taken into custody for questioning in regards to Liz's story and the psychiatrist brings Liz back to her home. Martyn begins telling the police a completely different story, claiming that Liz and Frankie...