- Ragazza tutta nuda assassinata nel parco 1972

The Italian-Spanish co-production opens with wealthy businessman Johan Wallenberger emerging dead from a ghost train. Two questions soon emerge: what was he doing there and was his death mere hours after taking out a one-million dollar insurance policy something more than coincidence. Hoping that the latter question will answer the former by way of proving foul play, the insurance company calls in cocky young investigator Chris Buyer, essayed by genre regular Robert Hoffmann. Introduced to one of Wallenberger's daughters at a party – she has just, not coincidentally, been the recipient of a threatening telephone call and is then terrorised in her house – the investigation soon leads the pair to the family home, complete with another, equally beautiful and suspect sister and the not unattractive, recently widowed mother. The case gets increasingly complicated from here on in, with blackmail, intrigues and double-crosses leading to a few instances of killing as the ultimate simplification of life…