Other mistake: When Magnum asks Higgins a favour, she tells him that he already asked for one 'last week'. She repeats that later in the terrorist's car. With that being a reference to the previous episode, it means that her arm, literally pierced by a bullet and that she had in a sling, healed completely without as little as a bandage (she is even wearing a sleeveless dress!) in 7 days or so. (00:25:40)
Magnum P.I. (2018)
1 other mistake in From the Head Down
Directed by: Justin Lin
Starring: Jay Hernandez, Zachary Knighton, Perdita Weeks, Nadine Nicole
Continuity mistake: Rick pulls up in a car to the right side of a helicopter, gets out, and gets in the helicopter. When the helicopter is shown taking off, there is no car next to it. (00:38:20)
The Cat Who Cried Wolf - S1-E7
Detective Gordon Katsumoto: Why are you following me?
Thomas Magnum: Uh...
Detective Gordon Katsumoto: Word of advice: if you wanna tail someone, don't do it in a red Ferrari. (00:30:00)
Trivia: The original TC, Roger E. Mosley, shows up in 2 episodes in the series. The first is S1-E18 - A Kiss Before Dying and the other is in S3-E5 The Day Danger Walked In.