Der Schlüssel
- Episode aired Sep 9, 1994
- 58m
A female voice orders Derrick to contact a Konstantin Howald, and warn him about a forthcoming murder attempt.A female voice orders Derrick to contact a Konstantin Howald, and warn him about a forthcoming murder attempt.A female voice orders Derrick to contact a Konstantin Howald, and warn him about a forthcoming murder attempt.