Magnum, P.I. (1980)

Rick persuades Thomas to take a high-reward, supposedly simple missing person case, but the person paying for the case is actually New York City cop Michael Doheny, who has his own reasons for wanting to find the man in question. Doheny has come to Hawaii to track down those responsible for the rape and murder of his young grand-daughter on the night of his retirement dinner, a hunt in which he asks Magnum's help...