Magnum, P.I. (TV Series 1980–1988) 1980, 1988, Action, Adventure, Crime, United States Magnum, P.I. (TV Series 1980–1988) Duration: 48m Description: Magnum, P.I.: Created by Donald P. Bellisario, Glen A. Larson. With Tom Selleck, John Hillerman, Roger E. Mosley, Larry Manetti. The adventures of a Hawaii-based private investigator… Trailer ↗ United States 1980 1988 Action Adventure Crime