Delirium

Emma Roberts

— Lena Holoway

Billy Campbell

— Thomas Fineman

Erin Cahill

— Rachel Holoway

Michael Michele

— Elyse Hargrove

Jeanine Mason

— Hana Tate

Melinda McGraw

— Lydia

Corey Reynolds

— Tack

Gregg Sulkin

— Julian Fineman

Ian Anthony Dale

— Liam

Daren Kagasoff

— Alex Sheathes

Linc Hand

— Officer

Delon de Metz

— Frederick Hargrove

Jack Guzman

— Officer 303

Brenda Koo

— Ren

Santiago Segura

— Billy

Melinda Y. Cohen

— Lena's Mother

Lauren Neal

— Taylor

Link Baker

— Cop

Jonathan Spencer

— Humorless Scientist

Jason Sims-Prewitt

— C.O.

Tim Mikulecky

— David Haloway

Karen Constantine

— Mrs. Rogers H.S. Teacher

Errol Sack

— Swat Guy

Candy Richardz

— Officer (credit only)

Ryan Groves

— Rebel

Michelle Alvarado Martins

— Teenager

Mel McComb

— Janice

Tilda Del Toro

— Police Officer (uncredited)