Diane Christine Pierce, 45, disappeared after a night at the Spa Resort Casino in Palm Springs on February 15, 2006. She had gone to the casino with her boyfriend and returned to separate hotel rooms at about 2:30 a.m.; she was never heard from again.

Diane’s car was located the next day abandoned in a rural stretch along Highway 74 near Sugarloaf Mountain, but Diane was not at the scene. She required insulin for diabetes and was also being treated for depression, details that make the absence of her medication especially concerning. At the time she was last seen in a green halter top and black jeans, and had tattoos including her name and a Mickey Mouse character on her left leg.

Her disappearance remains unsolved and her whereabouts are unknown. If anyone has information about Diane or remembers seeing her or her vehicle in that area around February 15–16, 2006, please come forward.