Flavio Bucci as Blackie

Macha Méril as The Lady on the Train

Gianfranco De Grassi as Curly

Enrico Maria Salerno as Prof. Giulio Stradi

Marina Berti as Laura Stradi

Irene Miracle as Margaret Hollenbach

Laura D'Angelo as Lisa Stradi

Franco Fabrizi as The Voyeur on the Train

Dalila Di Lazzaro as Nurse Pauline (uncredited)

Rita Moscatelli as Marie (uncredited)

Karl-Heinz Peters as Margaret's Father (uncredited)

Giovanni Di Benedetto as Intellectual on the Train

Selan Karay as Navy Officer on the Train (uncredited)

Alberto Squillante as Joe (uncredited)

Richard Davis as Santa Victim (uncredited)