Magnum P.I. 3x10 "The Long Way Home" Season 3 Episode 10 Promo trailer HD - When an Army ranger goes missing after returning from deployment, Magnum learns of the traumatic news he received upon arriving home and must find him before survivor’s guilt consumes him. Also, Higgins and Ethan solve the case of a missing engagement ring while on a mini-break, and Katsumoto tries spending quality time with his teenage son, on MAGNUM P.I., Friday, March 5th on CBS.