Legacy of Murder (1982)

Struggling private detectives Bernie Weinstock and his assistant Robin Bright are engaged by solicitor Roland Tolhurst to locate the whereabouts of six people on the bequest of his employer Lord Algrave, with a reward of £5,000 for each person found. Upon instructions they are to give each person they find a sealed envelope with two curious questions they are to ask them to prove their identity. They are told little else, but as they begin their search they discover that someone does not want them to find them, and before long one by one the people on the list start being murdered. Can Weinstock and Bright find the others before it is too late?