An encounter with a blind man ends unexpectedly for Susan Howard. The supposedly helpless man stuns and kidnaps her. The case is handed over by the Home Secretary to Sir John, the head of Scotland Yard. He entrusts Chief Inspector Higgins and Superintendent Lane with the investigation. Their investigations quickly lead Higgins and Lane on the trail of murder, white slavery and blackmail.
| Actor | Role |
|---|---|
 Joachim KemmerInspector Higgins | Inspector Higgins |
 Julia BremermannBarbara Lane | Barbara Lane |
 Leslie PhillipsSir John | Sir John |
 Eddi ArentFlatter | Flatter |
 Doris KunstmannMrs. Harper | Mrs. Harper |
 Peter SimonischekHarry Harper | Harry Harper |
 Michael GwisdekPater Fisher | Pater Fisher |
 Ronald PickupDr. Bartnik | Dr. Bartnik |
| CChristiane ReiffAnn Pattison | Ann Pattison |
| OOlaf RauschenbachChris | Chris |
 Rüdiger KuhlbrodtNot listed | Not listed |
 Yvonne De BarkNot listed | Not listed |
| Doris KunstmannNot listed | Not listed |
| PPhilippa HowellNot listed | Not listed |
| RRomy KühnertNot listed | Not listed |
 Eva EbnerNot listed | Not listed |
 Sophie Ellis-BextorNot listed | Not listed |
| AAlbrecht DellingNot listed | Not listed |
| LLeon BodenNot listed | Not listed |
| AAstrid ArnoldNot listed | Not listed |
| JJulie SmithNot listed | Not listed |
 Kaspar EichelNot listed | Not listed |
 Wendy GlennNot listed | Not listed |
| VVincenzo RicottaNot listed | Not listed |
 John McEneryNot listed | Not listed |
| EErdmann von GarnierNot listed | Not listed |
| SSigrid LamprechtNot listed | Not listed |