Corporal Alice Westergren was an officer of the San Francisco Police Department. Unknown to anyone else in the department, Alice was having an affair with Detective Terry Chasen, which Alice took very seriously, while Chasen was estranged from his wife. Shortly before Christmas in 2005, Chasen reconciled with his wife, and told Alice their affair was over. Feeling her age, and unable to contemplate spending the rest of her life alone, Alice plotted to murder Chasen. The police confronted Alice in her home on Christmas Day. She confessed sadly, and gave herself up.