Dinwiddie attended a concert of the band U2 in Columbia, South Carolina with friends on September 23, 1992. The concert ended at approximately 11:15 p.m. Dinwiddie and her group then stopped at Jungle Jim's, a nightclub in the Five Points' area of Columbia. Dinwiddie was last seen at approximately 1:30 a.m. on September 24 by an employee at the club. Her friends lost track of her at the club and assumed she had a ride home; they left at approximately 1:00 a.m. Dinwiddie apparently spoke to the bouncer for 15 minutes before walking out the door between 1:15 and 1:30 a.m. She was last seen walking north on Harden Street. She left her purse behind and has never been seen again. Investigators are probing the possibility that Reinaldo Javier "Ray" Rivera was involved in Dinwiddie's disappearance. He was convicted of the death of a police officer in 2004 and sentenced to death, plus seven life terms for related crimes. No charges have been filed against him in connection with Dinwiddie’s case. Interviews with him on the subject have not been fruitful.