Hugo Stiglitz as Dean Miller

Laura Trotter as Dr. Anna Miller

Maria Rosaria Omaggio as Sheila Holmes

Francisco Rabal as Major Warren Holmes

Sonia Viviani as Cindy

Eduardo Fajardo as Dr. Kramer

Stefania D'Amario as Jessica Murchison

Ugo Bologna as Mr. Desmond

Sara Franchetti as Liz the Maid

Manuel Zarzo as Colonel Donahue (as Manolo Zarzo)

Tom Felleghy as Lieutenant Reedman (as Tom Felleghi)

Pierangelo Civera as Bob

Achille Belletti as TV Station Technician

Mel Ferrer as General Murchison

Agustín Bescos as Man in Elevator (uncredited)

Edy Biagetti as Military Officer (uncredited)

Frank Clement as Aide (uncredited)

Ottaviano Dell'Acqua as Zombie Outside TV Station (uncredited)

Roberto Dell'Acqua as Zombie (uncredited)

Alejandro de Enciso as Captain (uncredited)

Umberto Lenzi as Reporter (uncredited)

Fiamma Maglione as Mr. Desmond's Secretary (uncredited)

Carmen Martínez Sierra as Woman in Elevator (uncredited)

Antonio Mayans as Cameraman (uncredited)

Benito Pacifico as Zombie (uncredited)

Renzo Pevarello as Victim at Murchison House (uncredited)

Silvana Scandariato as Woman at TV Station (uncredited)

Maurizio Streccioni as Television Station Worker (uncredited)

Sergio Testori as Soldier (uncredited)

José Yepes as Controller (uncredited)

Rinaldo Zamperla as Zombie (uncredited)

Anna Maria Zamperla as Marta Jones (uncredited)

Román Ariznavarreta as Zombie (uncredited)

Giuseppe Monteverdi as Jack Jones (uncredited)