Christopher Connelly as Professor George Hacker

Laura Lenzi as Emily Hacker

Brigitta Boccoli as Susie Hacker

Giovanni Frezza as Tommy Hacker

Cinzia de Ponti as Jamie Lee

Cosimo Cinieri as Adrian Mercato

Andrea Bosic as Optician

Carlo De Mejo as Luke

Enzo Marino Bellanich as Wiler

Mario Moretti as Tennant

Lucio Fulci as Dr. Forrester

Tonino Pulci as Orderly

Martin Sorrentino as Caretaker (uncredited)

Nat Bush as Caretaker (uncredited)