Magnum P.I. 3x15 "Before The Fall" Season 3 Episode 15 Promo Trailer HD - Magnum’s Uncle Bernardo (Steven Michael Quezada) visits and reveals a shocking secret about Thomas’ mother. Also, TC asks Higgins for help when he realizes he may have witnessed a potential murder from his helicopter, Higgins decides it’s time to tell Ethan the truth about her past and TC offers Shammy the opportunity to become a pilot, on MAGNUM P.I., Friday, April 30th on CBS.