Julian Richings
— William Cassidy
Lisa Houle
— Dr. Tobin
Adam Seybold
— Joe Sullivan
Mark Gibson
— Agent Brinkman
Justin Darmanin
— Agent Falco
Ry Barrett
— Agent Higgins
Ari Millen
— Agent Rudder
Cathryn Hostick
— Heather
Jason David Brown
— Alien
Dee Wallace
— Ashley Winnington-Ball (uncredited)
Tony Burgess
— Griffin Jones