The set for the Phelps house in this episode was also used earlier in King's Ransom.
Nancy Kulp would go onto play Jane Hathaway on The Beverly Hillbillies.
This is the only episode of the series where flashabacks are prominently featured.
Rosemary DeCamp had previously played Margaret MacDonald in the classic sitcom Love That Bob.
The characters of the two homicide detectives, Monaghan and Monroe, were recurring in the novels on which the series is based.
Carella: (about the crime scene) More likely somebody faked a robbery to cover up a murder.
Havilland: What'll I do if homicide calls?
Carella: Tell 'em we're doing our usual brilliant job.
Mrs. Travail: (about Ted Boone) Artists are capable of anything.
Boone: (about Amy) She outgrew me.
Phelps: I have faults. Bad faults. But I don't go around killing people.
Meyer: (to the culprit) It's kind of a long way to go to protect an investment.
The solution to this one is a bit of a stretch although believable in the way it's explained. Otherwise, the episode is excellent especially in its use of flashbacks to tell the story of a murder victim.