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.
Lex Barker
as Old Shatterhand
Pierre Brice
as Winnetou
Götz George
as Fred Engel
Karin Dor
as Ellen Pattersson
Herbert Lom
as Colonel Brinkley
Marianne Hoppe
as Mrs. Butler
Ralf Wolter
as Sam Hawkens
Eddi Arent
as Lord Castlepool
Mirko Boman
as Uncle Gunstick
Sima Janićijević
as Patterson
Slobodan Dimitrijević
as Rollender Donner
Branko Špoljar
as Doc Jefferson Hartley
