In the book "The Columbo Phile: A Casebook," (via MeTV), writer Richard Levinson, who co-created "Columbo" with his frequent collaborator and co-writer William ... regards to Mrs. Columbo) make ...

The assumption, however, was laid to rest when other characters reported talking to Mrs. Columbo. She was real. Indeed, Kate Mulgrew played Mrs. Columbo in a short-lived spinoff series called "Mrs ...