Other mistake: A man kidnaps an IT tech and steals his uniform. The IT guy is quite large - at least a XXXL if not more. When the impostor IT guy walks into HPD Headquarters, he has a very well fitting IT uniform shirt. And he is of average build -maybe a medium size. There is no way he could be wearing the real IT guy's shirt without it looking like a tent.
Magnum P.I. (2018)
1 mistake in season 4
Directed by: Justin Lin
Starring: Jay Hernandez, Zachary Knighton, Perdita Weeks, Nadine Nicole
Thomas Magnum: Let me explain something to you about following leads...
Juliett Higgins: Oh, you're gonna mansplain something? How wonderful for me.
Thomas Magnum: No, I'm gonna P.I.-splain something to you! (00:24:35)
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.