Le Professeur

Alain Delon

Daniele Dominici

Sonia Petrovna

Vanina Abati

Giancarlo Giannini

Giorgio Mosca aka 'Spider'

Renato Salvatori

Marcello

Alida Valli

Marcella Abati - Vanina's mother

Adalberto Maria Merli

Gerardo Favani

Salvo Randone

professeur Porra

Lea Massari

Monica

Fabrizio Moroni

Fabrizio Romani

Sandro Moretti

Leo Montanari

Patrizia Adiutori

Valeria

Nicoletta Rizzi

Elvira

Carla Mancini

Female Student

Pino Ammendola

Ragazzo in discoteca (uncredited)

Liana Del Balzo

Signora Dominici, Daniele's mother (uncredited)

Roberto Lande

Krista Nell

Martine - the girl reading Daniele's palm (uncredited)

Maria Tedeschi

The Bespectacled Lady at the Funeral (uncredited)