Simon Oakland makes his first of three appearances as rival private investigator Vern St. Cloud.
At the end, when they show Edward pouring champagne and spilling it on his stock certificates, the overhead view has them spread out more than the view with them laid out next to him on the bed. It switches between both views several times.
The voice of the plumber on Jim's answering machine during the opening titles is that of frequent Rockford director and guest star Jackie Cooper.
Goof: In the scene on the golf course with Dominic Marcon, Rockford has on a dark shirt, pants and a light colored jacket. In the next scene, when he returns to his trailer, he has on a dark shirt and pants, but a matching dark jacket.