Hugo Stiglitz character Dean Miller
Laura Trotter character Dr. Anna Miller
Maria Rosaria Omaggio character Sheila Holmes
Francisco Rabal character Major Warren Holmes
Sonia Viviani character Cindy
Eduardo Fajardo character Dr. Kramer
Stefania D'Amario character Jessica Murchison
Ugo Bologna character Mr. Desmond
Sara Franchetti character Liz the Maid
Manuel Zarzo character Colonel Donahue (as Manolo Zarzo)
Tom Felleghy character Lieutenant Reedman (as Tom Felleghi)
Pierangelo Civera character Bob
Achille Belletti character TV Station Technician
Mel Ferrer character General Murchison
Agustín Bescos character Man in Elevator (uncredited)
Edy Biagetti character Military Officer (uncredited)
Frank Clement character Aide (uncredited)
Ottaviano Dell'Acqua character Zombie Outside TV Station (uncredited)
Roberto Dell'Acqua character Zombie (uncredited)
Alejandro de Enciso character Captain (uncredited)
Umberto Lenzi character Reporter (uncredited)
Fiamma Maglione character Mr. Desmond's Secretary (uncredited)
Carmen Martínez Sierra character Woman in Elevator (uncredited)
Antonio Mayans character Cameraman (uncredited)
Benito Pacifico character Zombie (uncredited)
Renzo Pevarello character Victim at Murchison House (uncredited)
Silvana Scandariato character Woman at TV Station (uncredited)
Maurizio Streccioni character Television Station Worker (uncredited)
Sergio Testori character Soldier (uncredited)
José Yepes character Controller (uncredited)
Rinaldo Zamperla character Zombie (uncredited)
