Karen Gillan as Kaylie Russell

Brenton Thwaites as Tim Russell

Katee Sackhoff as Marie Russell

Rory Cochrane as Alan Russell

Annalise Basso as Young Kaylie

Garrett Ryan as Young Tim

James Lafferty as Michael Dumont

Miguel Sandoval as Dr. Shawn Graham

Kate Siegel as Marisol Chavez

Scott Graham as Warren

Justin Gordon as Supervisor Mark

Dave Levine as Robert Clancy

Stephanie Minter as Virginia Lasser

Skye L. Johnson as Mary O'Connor

Courtney Bell as Auctioneer

Allison Boyd as Beatrice O'Connor

Jamie Flanagan as Tobin Capp

Alexandra Beer as Marcia Wicker

Marc D. Evans as Oliver Jeffries

Toni White as Alice Carden

Katie Parker as Phone Store Clerk

Ginger McNamara as Dinner Guest (uncredited)

Brett Murray as Officer 1 (as Brett Luciana Murray)