Complete credited cast:
Conal Byrne Conal Byrne ...William / Edward / William Zero
Amy Seimetz Amy Seimetz ...Jules
Melissa McBride Melissa McBride ...Dr. Ashley Bronson (as Melissa Suzanne McBride)
Adam Fristoe Adam Fristoe ...Mr. Langley
Tim Habeger Tim Habeger ...Dr. Archer
Scott Poythress Scott Poythress ...Lester
Lake Roberts Lake Roberts ...Baxter