Character mistake: In the opening narration, Magnum says "Take my good friend Marcus, for example. I woke up one day and realised I was 32 and I'd never had a chance to be 22." In the second part of the very pilot of the series, Magnum says to Alice "One day I woke up age 33 and realised I'd never been 23."
Magnum, P.I. (1980)
1 character mistake in Legacy from a Friend - chronological order
Starring: Tom Selleck, Roger E. Mosley, John Hillerman, Larry Manetti
Don't Eat the Snow in Hawaii - S1-E1
Continuity mistake: When Magnum drops the ring out of the envelope, nothing is near it as it's shaking. In the close up shot, it's next to keys. (00:44:20)
Mac: Time has little to do with infinity and jelly donuts.
Trivia: At the awards ceremony, three men seated at a table together resemble three detectives from 1970s TV shows. Detective Mike Stone (played by Karl Malden) from ABC's Streets of San Francisco; Detective Frank Columbo (played by Peter Falk) from NBC's Columbo; and Detective Theo Kojak (played by Telly Savalas) from CBS's Kojak. (00:07:20)