We have an exclusive clip from Sony Pictures Home Entertainment's new horror-comedy Detention, arriving on Blu-ray and DVD July 31. Dane Cook stars as Principal Verge, who gives one of his rebellious students (Shanley Caswell) Saturday detention, the same day as the prom. Take a look at this scene from director Joseph Kahn's horror-comedy.

Josh Hutcherson, Dane Cook and Spencer Locke star in Detention, a hipster teen horror-comedy, in which the students of Grizzly Lake must survive their final year of high school. Standing in their way is Cinderhella, a slasher movie killer who has seemingly come to life and is preying on the school's student body. As the clock ticks and the bodies pile up, the likely suspects are embroiled in a race against time to stop Cinderhella and ultimately save the world ... if only they can get out of detention.

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