Vincent Price as Dr. Robert Morgan

Franca Bettoia as Ruth Collins

Emma Danieli as Virginia Morgan

Giacomo Rossi Stuart as Ben Cortman

Umberto Raho as Dr. Mercer

Christi Courtland as Kathy Morgan

Antonio Corevi as Governor

Ettore Ribotta as TV Reporter

Rolando De Rossi as TV Reporter

Giuseppe Mattei as New People Leader

Enrico Salvatore as TV Reporter

Alessandro Tedeschi as Passerby

Carolyn De Fonseca as Ruth Collins (voice)