Fred Engel's father is murdered by Colonel Brinkley in order to acquire a treasure map, however the Colonel only acquires half of it, the other half as held by Mrs. Butler. Discovering the scene of the crime, Old Shatterhand and Winnetou help Fred bring his father's murderer to justice and locate the treasure of Silver Lake.

• Jadran Film
• Société Nouvelle de Cinématographie
• Lex Barker
• Pierre Brice
• Götz George
• Karin Dor
• Herbert Lom
• Marianne Hoppe
• Ralf Wolter
• Eddi Arent