Another little thing about a year after "Negative Reaction." It was in "Forgotten Lady." Grace Wheeler (Janet Leigh) asks Columbo if he has taken leave of his senses. Very ironic, considering the nature of the ending.

And when Columbo enters the real estate office post homicide in RIP, Mrs. Columbo, Mrs. Dimitri says something like "Things are a little crazy here right now".

Joe

It's interesting that you mention the "Miss McGrath" character, because apart from Frances' suspicions, the story never really tells you that there was anything between her and Paul. So if you consider adultery a sin, she might have been as innocent of that as of murder. I always notice that as she's walking away in that scene, she observes "custom" by not stepping directly on the front of a grave, sidestepping it instead. I always wonder whether that was planned, or just reflex on the actress' part.