A medical doctor gets into trouble when one of his patients turns out have been involved in espionage (maybe).
| Actor | Role |
|---|---|
 Bernard Blierle Docteur Lefèvre | le Docteur Lefèvre |
 Bruno CremerMatras | Matras |
 Claude PiépluMonteil | Monteil |
 Suzanne FlonGeneviève Laurent | Geneviève Laurent |
 Patricia ScottSylvie Lefèvre | Sylvie Lefèvre |
 Pierre Le RumeurKruger | Kruger |
 Francis LaxRodard | Rodard |
| JJacques SempeyNot listed | Not listed |
 Jacques RispalNot listed | Not listed |
 Madeleine GeoffroyNot listed | Not listed |
| RRenée BarellNot listed | Not listed |
 Jean-François RémiNot listed | Not listed |
| PPierre ParelNot listed | Not listed |
 Gabriel GasconNot listed | Not listed |