Kay Freestone, assistant to television network executive Mark McAndrews, shares both a professional and an intensely personal relationship with her boss. When Mark is promoted, she expects him to give her his job. But Mark, with a cold professional eye, refuses, believing that she isn't yet ready for the responsibility. Kay retaliates by murdering Mark, whom she feels has used her, and setting up a seemingly airtight alibi. But Columbo, even with an injured neck, begins unraveling her plan with all the practiced ease of an expert screenwriter.

Revealing mistakes: In this movie, the image of Columbo's car, sitting in the parking lot, can be seen reflecting off the glass of the CNC building as Kay enters it, before she commits the murder.

Music by Antonio Vivaldi
Columbo hears it at the monitor room