The marina scenes in this episode appear to have been shot at the Bayshore Marina in Newport Beach, CA. You can, with great difficulty, make out the name when the sign is run past near the end of the episode, and a visual confirmation of the modern marina building matches the building seen in the episode.
Britt Reid provides his reason for fighting crime in the first scene with Frank at his home. He mentions that racketeer Glenn Connors (Victor Jory) is one of the men who framed Reid's father.
Private Investigator Nat Pyle's office is a set that is used in several episodes. In "The Silent Gun" it was Joe Renner's apartment; in "Eat, Drink and Be Dead" it is Dirk's board room. Despite being redressed for each episode, little details such as the city view outside the window and the general shape of the room give it away.