Elizabeth Ann Duncan was convicted of orchestrating the murder of her daughter-in-law in 1958. She was the last woman to be executed in California. Duncan was convicted of hiring 28-year-old Augustine Baldonado and 23-year-old Luis Moya to murder her daughter-in-law, Olga Duncan, who was seven months pregnant at the time. All three were executed in the gas chamber at San Quentin State Prison on August 8, 1962, the last triple execution in California.