A Rialto Film Production
West Germany 1962 - 95 min.
Distributed by Constantin
Premiered: 22.6.1962
FSK: ab 12,f (gr.16, nf)
A first trace for a solution of a puzzling murder series leads Scotland Yard's Superintendent Martin to the Castle of the deceased Lord Selford. Before his death he trusted a key each to seven friends, which would open the door to the hidden vault with the family fortune. Only Selford's son is to take over the full inheritance, on the birthday of his adulthood. But soon it turns out, that his son does not live any longer. Next heiress is Selford's niece, Sybil. When she is threatened as well, Superintendent Martin can save her in the last second…