Heart Condition (1990)
Jack Moony, a white cop, has it in for a black lawyer to the drug crowd, Napoleon Stone. That Stone is now dating his ex-girlfriend doesn't help matters at all. Stone is shot after Moony suffers a heart attack and wakes to find that he not only has a new heart, but that it is Stone's and that Stone's ghost is now his constant companion. Stone is insistent that Moony not only take care of his heart now but that Moony solve his murder.