Thomas Magnum is a fictional character and the protagonist of the television series Magnum, P.I., which originally aired from 1980 to 1988. He is a private investigator living in Hawaii, known for his laid-back demeanor, charm, and keen investigative skills. Magnum often works on cases that involve crime and mystery, utilizing his military background as a former Navy SEAL. The character is portrayed by actor Tom Selleck, who became iconic for his role. Magnum drives a red Ferrari 308 GTS and lives in a guest house on the estate of the wealthy author Robin Masters. The show combines elements of drama, action, and humor, making it a beloved classic.