The first episode in which neither Anthony Eisley nor Robert Conrad appears. And as noted above, Connie Stevens only appears in a vocal performance from a previous episode. Thus of the original four stars, only Poncie Ponce appears in new footage.
This was Mike Road's third guest appearance in nine months; he made four overall.
Cricket's only appearance in this show is in footage recycled from the first season episode Hong Kong Passage (1960), in which she sings the Peggy Lee tune "A Very Special Day."
Paula Raymond, who plays an archaeologist in this episode, had earlier played a paleontologist in the movie The Beast from 20,000 Fathoms (1953).
Although it's not an actual remake, the story does bear marked similarities with "The Maltese Falcon," which Warners also owns.