Michael BrandonRoberto Tobias

Mimsy FarmerNina Tobias

Jean-Pierre MarielleGianni Arrosio

Aldo Bufi LandiPathologist

Calisto CalistiCarlo Marosi

Marisa FabbriAmelia, the Maid

Oreste LionelloThe Professor

Fabrizio MoroniMirko

Corrado OlmiPorter

Stefano Satta FloresAndrea

Laura TroschelMaria

Francine RacetteDalia

Bud SpencerDiomede / Godfrey

Dante CleriCoffin Salesman

Guerrino CrivelloRambaldi, the Neighbor

Gildo Di MarcoPostman

Tom FelleghyPolice Commissioner Pini

Leopoldo MiglioriMusician

Fulvio MingozziMusic Studio Manager

Stefano OppedisanoBearded guy with girlfriend

Pino PattiFuneral Exhibition Attendant

Ada PomettiExtra (credit only)

Jacques StanyPsychiatrist

Fortunato Cecilia

Franz Colangeli

Shirley Corrigan

Luigi Cozzi

Giovanni Di Benedetto

Sandro Dori

Renzo Marignano

Quinto Marziali

Diego Morreale

Anna Maria Perego

Pupita Lea Scuderoni

Maurizio Streccioni

Dario ArgentoDirector & Screenplay & Story

Mario FogliettiStory

Luigi CozziStory

Salvatore ArgentoProducer