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.

A serial killer named The Shark is terrorizing London by killing his victims with a speargun and then, dressed in a scruba-diver's wetsuit, using the city's sewer tunnels to make his getaway.

A disfigured killer with glazed-over white eyes is doing the dirty work so that an insurance agent-doctor can get the victims' insurance money.

Stahlnetz is a German television series.