AnnaLynne McCord as Pauline

Traci Lords as Phyllis

Ariel Winter as Grace

Roger Bart as Bob

Jeremy Sumpter as Adam

John Waters as William

Malcolm McDowell as Mr. Cooper

Marlee Matlin as Amber

Matthew Gray Gubler as Mr. Claybaugh

Ray Wise as Principal Campbell

Molly McCook as Natalie

Natalie Dreyfuss as Abigail

Cole Bernstein as Kimberly

Matthew Fahey as Nathan

Sidney Franklin as Timothy

Brennan Bailey as Sebastian

Emily Bicks as Breanna

Cameron Allen as Young Pauline

Rachel Ann Mullins as Zombie (uncredited)