What does P2 mean in Academic & Science?

P2

P2 is a 2007 American/Canadian thriller film directed by Franck Khalfoun, written and produced by Khalfoun, Alexandre Aja and Grégory Levasseur and starring Rachel Nichols and Wes Bentley. The trio of Khalfoun, Aja and Levasseur have also worked on the 2006 film The Hills Have Eyes. The film's title comes from an underground parking-garage level in which the film takes place. The plot revolves around Angela, a young businesswoman who is imprisoned on Christmas Eve in the parking garage beneath the downtown Manhattan office block where she works. Her captor is loner Thomas, the psychopathic and obsessive security guard of the underground parking lot, who has been secretly stalking Angela for some time and has finally snapped, leading to a murderous game of cat-and-mouse.

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