Strange fortune hunters are behind a girl's murder in this Edgar Wallace tale.

The country estate of American emigre Abel Bellamy is haunted by the ghost of the Green Archer, a 14th century Robin Hood type figure who terrorised the former lords of the manor. Now, with the gangster coming home on vaguely defined business and his niece Valerie arriving with her adoptive father to take up residence in the adjacent mansion, much to Bellamy's annoyance, the archer has returned. Who is he and what does he want?

A strange, red circle appears on the neck of a man saved from the guillotine. What is its mysterious meaning? Tragically, it turns out to be something of a family curse, as each generation thereafter bears the same sign, which in turn leads to blackmail and murder.

In Hamburg's red light district Jule and his mob of macks battle Holleck's competing Viennese clan. When a sex worker is murdered both kingpins join forces to hunt the killer and keep the police from cracking down on their business.

German journalist Peter Holberg arrives in Hong Kong and, by accident, he is carrying a microfilm that was destined to local gang lord, Marek. Peter is helped by another German journalist, Joan Kent, and falls in love with a night-club dancer, Colette. Colette is actually working for Marek, but betrays the gang for love - at the ultimate cost to her. The HK Police will intervene just in time to prevent Peter from further losses.