• 
  Richard Thorpe

  regizor

• 
  Robert Blake

  Enrico, Naples Bus Boy
• 
  Gene Kelly

  Giovanni E. 'Johnny' Columbo
• 
  Barry Kelley

  Capt. Thompson
• 
  Ray Bennett

  Poliţist
• 
  Frank Puglia

  Carlo Sabballera
• 
  J. Carrol Naish

  Louis Lorelli
• 
  Peter Brocco

  Roberto Columbo

• 
  Sayre Dearing

  Juror
• 
  Teresa Celli

  Isabella Gomboli
• 
  Mario Siletti

  Benny Danetta aka Nino
• 
  Eugene Borden

  Laborer
• 
  Bert Freed

  Prosecutor
• 
  James Pierce

  aprod
• 
  Fernanda Eliscu

• 
  Mimi Aguglia

  Mrs. Sabballera
• 
  Marc Lawrence

  Caesar Xavier Serpi
• 
  Eleonora von Mendelssohn

  Maria Columbo (as Eleonora Mendelssohn)
• 
  Carl Milletaire

  George Allani / Tomasino
• 
  Grazia Narciso

  Mrs. Danetta
• 
  Maurice Samuels

  Moriani
• 
  Burk Symon

  Judge

• 
  Gabriel Scognamillo

  art director
• 
  Cedric Gibbons

  art director
• 
  Paul Vogel

  imagine
• 
  Alberto Colombo (I)

  departament sunet
• 
  Walter Plunkett

  costume
• 
  Cotton Warburton

  montaj
• 
  Joel Freeman

  second unit director or assist
• 
  Edwin B. Willis

  set decorator
• 
  Douglas Shearer

  sound department
• 
  Warren Newcombe

  special effects
• 
  Luther Davis

  scriitor