Lily LaSanka is a character in Murder by the Book, played by late actress Barbara Colby. She is the lonely owner of a general store frequented by Ken Franklin on his trips to his lake cabin in San Diego; she is a huge fan of the Mrs. Melville mysteries he "co-writes" with Jim Ferris and not-so-secretly in love with Ken, though he does not return her affection. She later tries to blackmail him over his involvement in Jim's murder, which in turn prompts him to murder her too.
She is the first character on Columbo to be the "second" murder victim.