Leighton Meester as Mackenzie Carpenter

Van De La Plante as Horny the Clown / Archie Benjamin

Nicholas D'Agosto as Fisher Kent

Melora Hardin as Marcia Carpenter

Penn Badgley as Van

Lola Glaudini as Detective Brenda Chase

Larry Joe Campbell as Detective Dwayne Crockers

Morgan Spurlock as Robbie, The Hella-Burger Manager

Rachael Bella as Starfire

Shedrack Anderson III as Chuck Taylor

Sita Young as Val Espinoza

Karis Campbell as Anita Hill

John Gilbert as Jack Benjamin

Danielle Taddei as Young Grace

Maliabeth Johnson as Tina McCandless

Edward DeRuiter as Brandon Meeks

Haven Lamoureux as Tony

Paul Ganus as Bill Carpenter

Robert Curtis Brown as Bert McCandless

Sean Whalen as Lenny Schwartz

Tyler King as Chad Baldwin

Sarah Buehler as Carrie

Jessica Landon as Brittany

Nicole Cavazos as Tiffa

Clyde Kusatsu as Fred Fukizaki

Caia Coley as Nurse