Lora Nikolova was 25 when she was killed in Marietta, Georgia, on April 5, 2004. A Bulgarian national who arrived in the United States the previous July on a student summer work program, she worked as a lifeguard and was living with 40-year-old David Andrew Robertson.

Police say Joshua Kevin Drucker and his girlfriend, Melissa Suzanne McCrayer, went to Robertson’s home that evening. Drucker shot Robertson in the back; when Nikolova ran to investigate, she was shot in the neck. The assailants robbed the house, left her wounded, then returned multiple times. When they found her still alive on a later return, Drucker shot her in the head. Items taken reportedly included credit cards, a car, Nikolova’s diamond ring and her cell phone.

Drucker and McCrayer were charged in the killings; a Cobb County jury later convicted Drucker of the murders and recommended the death penalty. Did anyone who knew Lora or saw activity around that Marietta neighborhood in April 2004 notice anything that could help fill in the timeline?