Thomas William "Tom" Selleck (born January 29, 1945) is an American actor and film producer. He is best known for his starring role as the private investigator Thomas Magnum in the television series Magnum, P.I. (1980 to 1988), based in Hawaii. He also plays Police Chief Jesse Stone in a series of made-for-TV movies based on Robert B. Parker novels. Since 2010, he has appeared as NYPD Police Commissioner Frank Reagan in the drama Blue Bloods on CBS-TV.