...there's also the case of Lt. Frank Columbo's wife. She's repeatedly brought up on the original run of Columbo, but never seen. Then Universal and NBC (Fred Silverman?) get the not-so-bright idea of getting Kate Mulgrew to play her in something titled Mrs. Columbo in 1979. Of course, Mulgrew was way too young to be that Mrs. Columbo -- Mulgrew was 24 years old in '79, which meant that she was 5 years old when Bert Freed first played Lt. Columbo on The Chevy Mystery Show and 13 years old when Peter Falk made the pilot for the series. Mrs. Columbo was trashed by critics, viewers, Richard Levinson and Peter Falk alike, and Universal and NBC scramble to salvage the thing. The series gets renamed Kate Columbo, then Kate the Detective, and finally Kate Loves a Mystery (apparently trying to glom onto the memory of the old radio show I Love a Mystery). Kate Columbo magically gets renamed Kate Callahan, and the good lieutenant's beat-up car disappears from the opening sequences of the episodes. So, was she actually Mrs. Columbo, or merely a nightmare on Silverman's part that everybody else wanted to forget? ;D ...