Around roughly 10 minutes into the episode, Perry goes to Cameron Burgess' home and it is the same house used as the home for the Barkleys on western television series The Big Valley (1965).
The song the band is playing in the opening club scene is a rock instrumental arrangement of "Jersey Bounce", a big band hit from the 1940's. The same rock version of the song is heard playing on a car radio in Perry Mason (1957), The Case of the Scarlet Scandal (1966), which originally aired three weeks before this episode.