Unfortunately it’s not the entire Mrs. Columbo series but an episode of Kate’s series, Mrs. Columbo, is included on the DVD set of
Columbo - Season 3. Release date is Aug.9th. Link to pre-order can be found on the Store Page of Totally Kate - The Official Website of Kate Mulgrew.

http://www.totallykate.com/store.htm

Columbo: The Third Season

Winner of the Emmy® for Outstanding Drama Series, Columbo: The Third Season stars the legendary Peter Falk in 15 TV hours (8 episodes) of mystery fun. Guest stars include Martin Sheen ("The West Wing"), Vincent Price (Laura, Edward Scissorhands), Jackie Cooper (Superman, “The Little Rascals"), Katey Sagal ("Married … with Children"), Robert Culp ("I Spy"), Dana Elcar ("MacGyver") and country music legend Johnny Cash. In the third installment of this landmark series that launched an entire television genre, TV’s most beloved gumshoe unravels a host of fascinating new mysteries. As a bonus, this two-disc set includes an episode of Mrs. Columbo, the TV show that starred Kate Mulgrew ("Star Trek: Voyager") as Lt. Columbo’s crime-solving spouse!