Billionaire Sir John Prescott was found one night in his Leeds villa with his throat cut. The murder weapon was strange knife whose wooden handle bore a crudely engraved "A". The handle also contains the fingerprints of all the family members but everyone has a good alibi. The inheritance at stake is enormous. However Sir John's last will and testament requires the seven possible heirs to appear a month later to collect the fortune, but should there be more than three no one will receive a thing. A deadly game ensues: who will win? Ernesto Gastaldi has written more than 100 films, starring some the greatest actors in the world including Sophia Loren, Henry Fonda, Anthony Quinn, Telly Savalas, Carroll Baker, Barbara Steele, Jack Palance, James Mason, Steve McQueen, Van Johnson, Lee VanCleef, James Coburn, Mel Ferrer, Glenn Ford, Robert DeNiro and many others. His scripts have been directed and produced by well-known directors such as Sergio Leone, Mario Bava, Riccardo Freda, Lucio Fulci, and Sergio Leone among many others. Gastaldi ahs also directed six films including one of the first and greatest giallo films of all time, Libido in 1965 starring his wife, Mara Maryl. His films have achieved cult status worldwide. Among some of the best-known titles The Whip and the Body, Days of Wrath, My Name is Nobody, The Grand Duel, The Case of the Bloody Iris, and Once Upon a Time in America.