LOS ANGELES, California (Hollywood Reporter) -- Rawson Marshall Thurber ("Dodgeball: A True Underdog Story") has signed on to write and direct the big-screen adaptation of "Magnum P.I.," the 1980s series that made Tom Selleck a star. "Magnum P.I.," which ran on CBS from 1980 to 1988, followed the adventures of Thomas Magnum, a Navy intelligence officer-turned-private investigator hired by wealthy author and playboy Robin Masters to oversee security on the latter's massive Hawaii estate.