An American agent working undercover as a cafe pianist in Cairo sets out to capture a notorious spy and jewel thief known as "The Voice".
| Actor | Role |
|---|---|
 Richard DenningLarry Wilson | Larry Wilson |
 Lisa FerradayLynette Garay | Lynette Garay |
 Norman LloydLouie Baracca | Louie Baracca |
 Nestor PaivaJoe Octavian | Joe Octavian |
 George ZuccoThe Voice | The Voice |
 Donald RandolphHassan | Hassan |
 Dick ElliottMr. Shirley (uncredited) | Mr. Shirley (uncredited) |
 Peter MamakosPierre (uncredited) | Pierre (uncredited) |
 Baynes BarronSecretary (uncredited) | Secretary (uncredited) |