This was the final screen appearance for Stephen Boyd, who died three weeks after filming. He died on June 2, 1977 in Northridge, California from a massive heart attack while playing a round of golf.
This marks the last of 114 appearances by Harry Endo as forensic scientist Che Fong. Before beginning his run portraying Che, Endo previously appeared in one episode as a bank employee - his job in real life before he appeared on the series. Twenty years after his last appearance as Che in the original series, Endo reprised the Che Fong role in the unaired 1997 "Hawaii Five-0" television movie, which was an unsold pilot for a new series.
This episode (and season) mark the fifth time that the opening theme song was re-recorded to sound noticeably different. (The first time was at the beginning of Season 5, the second time at the beginning of Season 7, the third at the beginning of Season 8, and the fourth at the beginning of Season 9).
Filmed in May 1977.
The opening theme contains some tweaks to it.