Einer Frisst den anderen (1964 Germany)

 Einer Frisst den anderen (1964 Germany)
aka
Dog Eat Dog!
When Strangers Meet
Einer Frisst den anderen
Dollars Girl
An Act of Violence

While Darlene (Jayne Mansfield) writhes orgasmically on a bed of cash, her lover is pushing Corbett (Cameron Mitchell) over a cliff. All three have just stolen a million dollars bound for the States to be destroyed and a European manhunt has begun because they kill a guard. The manager of the hotel they're staying at and his lover, the hotel proprietress (Isa Miranda), find out and hatch a plan to murder the two and take the money for themselves right under the nose of the police. Darlene and her man soon hide out on a deserted Aegean island that once housed Europe's most famous bordello with the manager and his sister in hot pursuit. But Corbett isn't dead and the island isn't deserted: the deranged brothel owner and her manservant have come home for the old lady to die. The money goes missing, the cast go after it and it's dog-eat-dog as a killer picks them off one by one... (IMDB  melvelvit-1)

Jayne Mansfield called the film: "The best role of my career." American audiences wanted to know were this role was, for Einer frisst den anderen was not released to American theaters until two years after its official German release, in 1964. When released in the U.S.. it was released as Dog Eat Dog!, and flopped as it did everywhere else. Today the feature carries on a cult gathering, as a forever "gold-digging" classic.

~Wikipedia