Joan Rosenthal, 75, was shot and killed at her Tiburon, California home on September 22, 2009. Her housekeeper found her body in the enclosed front patio near the front door; she had a single gunshot wound to the head and police estimated she had been killed the previous night around 9:00 p.m.

Joan had recently been widowed, lived alone, volunteered at the local library, and was a grandmother with a small circle of close friends. Investigators reported no signs of forced entry and her house keys were found near her body, which led police to suggest she may have known her killer. Police checked her finances but found nothing to establish a motive. A $25,000 reward was offered and the FBI issued a ViCAP alert; Tiburon later approved surveillance cameras at town entry and exit points. A brief inquiry looked at a possible connection to convicted criminal Max Wade but no evidence linked him to the murder.

Does anyone from Tiburon or who knew Joan recall seeing anything unusual around her home that night or in the days before her death?