Episode 407--Mrs. Columbo AKA Kate Columbo AKA Kate the Detective AKA Kate Loves a Mystery
(Yes, this show went by all of those titles.)
Columbo was an NBC staple in their Mystery Movie rotation throughout most of the 70s. When the network went on a huge decline at the end of the decade, NBC tried anything to get viewers including a non-canonical spinoff. At least we got to see a young Captain Janeway.
It is Free