Elizabeth Duncan

Elizabeth Ann Duncan, also known as Ma Duncan, was born in 1904.

In November 1957 she moved in with her son Frank, in Santa Barbara, California. A few months later Frank met Olga Kupcyzk. Elizabeth demanded he end the relationship and when he refused she threatened to kill Olga. On learning Olga was pregnant Elizabeth hired Luis Moya and Augustine Baldonado to kill her. Moya and Baldonado visited Olga’s apartment on the 18th November, repeatedly hit her about the head, then drove the body to the Casitas damn and buried her. Olga’s body was discovered on the 21st December, when Baldonado led police to the grave, after being arrested on unrelated
charges. Elizabeth came to trial on the 24th February 1959 where she pleaded not guilty for reasons of insanity. However, she was found sane and convicted of first-degree murder.

Elizabeth Duncan was executed in San Quentin’s gas chamber on 8th August 1962.