Magnum P.I. Season 3, Episode 4 First the Beatdown, Then the Blowback IMDB 7.7 Country United States Duration 43 min Air Date 2021-01-08 Actors Jay Hernandez (Thomas Magnum) Perdita Weeks (Juliet Higgins) Zachary Knighton (Orville “Rick” Wright) Stephen Hill (Theodore “T.C.” Calvin) Tim Kang (Det. Gordon Katsumoto) Amy Hill (Teuila "Kumu" Tuileta) Overview Magnum and Higgins help an up-and-coming mixed martial arts fighter who is being pressured by a gang to throw an illegal fight. Also, Kumu is arrested for stealing an artifact from a collector that should be returned to its original resting place.