Emma Roberts as Lena Holoway

Billy Campbell as Thomas Fineman

Erin Cahill as Rachel Holoway

Michael Michele as Elyse Hargrove

Jeanine Mason as Hana Tate

Melinda McGraw as Lydia

Corey Reynolds as Tack

Gregg Sulkin as Julian Fineman

Ian Anthony Dale as Liam

Daren Kagasoff as Alex Sheathes

Linc Hand as Officer

Delon de Metz as Frederick Hargrove

Jack Guzman as Officer 303

Brenda Koo as Ren

Santiago Segura as Billy

Melinda Y. Cohen as Lena's Mother

Lauren Neal as Taylor

Link Baker as Cop

Jonathan Spencer as Humorless Scientist

Jason Sims-Prewitt as C.O.

Tim Mikulecky as David Haloway

Karen Constantine as Mrs. Rogers H.S. Teacher

Errol Sack as Swat Guy

Candy Richardz as Officer (credit only)

Ryan Groves as Rebel

Michelle Alvarado Martins as Teenager

Mel McComb as Janice

Tilda Del Toro as Police Officer (uncredited)