Mariko Van Kampen appeared in the original Magnum P.I. series.
Three "Hawaii Five-O" characters--Noelani, Kamekona and Flippa--make crossover appearances in this episode.
Mariko Van Kampen has had a guest role in Hawaii Five-O (1968), Magnum, P.I. (1980), Hawaii Five-0 (2010), and Magnum P.I. (2018). Each role has been a different character.
They have also borrowed another character, "Harry Brown", played by William Forsythe, from Hawaii Five-0 (2010) for this episode, and possibly the ninth episode of this season as well. The Hawaii Five-O episodes in particular were:
- Wawahi moe'uhane (2015) (Season 5, Episode 12)
- Huikau na makau a na lawai'a (2017) (Season 7, Episode 20)
Kamekona's line to TC about coming to him with a favour some time, and TC not saying no, is taken from The Godfather (1972).