The First Deadly Sin synopsis
Edward Delaney (Frank Sinatra) is nearing the end of his career as a New York City homicide detective. But, before he can retire, he picks up a case involving multiple brutal murders, the victims of which have nothing in common. With help from a museum curator (Martin Gabel), Edward starts to piece together the few clues the vicious killer has left behind. As he starts to close in on the killer, his wife, Barbara (Faye Dunaway), is diagnosed with a serious disease.