Christopher Showerman

as Bill

as Missing Person

as Mark

as Chris

as Dr. Penn / Alpha

as Greg

as Officer kelly

as Wendell

as Desmond Gage

as C.O. Walters

as Richard Carson

as Jonathan Brandt

as Dr. Kevin Green

as Henry

as John Smith

as Man

as Keith

as Captain Simmons

as Capt. Simmons

as The Driver (wraparound story)

as Agent Willis

as Tor

as Simon Weinreib

as Police Officer (voice)

as Captain

as XX

as Agent Moore

as Jason Haney

as John the Soundman

as Dr. Hamilton Manning

as Stack

as Luke

as Derek

as George

as Impossibly Hot Fireman

as Pete Nealy

as Dale