Theresa Madrigal was 33 and a mother of four when she left home in Riverside County to go grocery shopping on February 23, 1999, and never returned. Her body was found the following day near the entrance to Lake Poway, about 60 miles from her home. She had been shot multiple times; the killing remains unsolved.

The case has received repeated local media attention, and in recent years California Governor Gavin Newsom offered a $50,000 reward for information leading to an arrest and conviction in the case. No arrest has been announced.

If anyone knew Theresa, saw her on February 23, 1999, or has information that could help, please come forward to the investigators handling the case.