Beverly Ann Estrella Graham, 54, was shot in the head and killed at her Santa Barbara condominium on January 30, 2006. The shooter, identified as Jennifer San Marco, entered Graham’s unit by scaling a fence and using an unlocked sliding-glass door at the rear of the property.

San Marco, a former neighbor and one-time employee at the Goleta postal facility, had a documented history of psychological problems and erratic, racially hostile behavior. After the killing of Graham, San Marco drove to the Goleta postal facility and carried out further shootings there. Investigators reported San Marco had obtained a 9mm Smith & Wesson in New Mexico and had not been adjudicated mentally defective, allowing the firearm purchase.

No arrest related to the killing of Graham occurred because the shooter died at the scene of the subsequent attacks. What details about Beverly’s life or routine might help explain how the attacker gained access that night?