Dinwiddie attended 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. Dinwiddie was last seen walking north on Harden Street. She has never been seen again.

Dinwiddie was missed at 6:15 a.m. when her father saw that the lights and radio were on in her room and her bed had not been slept in. He called all of her friends and none of them knew her whereabouts, so he reported her missing at 8:30 a.m. The Columbia police treated Dinwiddie's disappearance as a kidnapping, since everyone who knew her said it would be very uncharacteristic of her to leave without warning. She is described as a cautious person who did not like to be out alone.

Investigators are probing the possibility that Reinaldo Javier Rivera was involved in Dinwiddie's disappearance. Rivera was charged with the murders of four Georgia women in 2000. Photos of Rivera are posted below this case summary. He was a resident of Columbia and a student at the University Of South Carolina in 1992, which was located near the Five Points area where Dinwiddie was last seen. Investigators are also looking into the possibility that Rivera was involved in the 1999 South Carolina disappearance of Paula Merchant. Authorities are uncertain if Rivera is connected to either Dinwiddie or Merchant's cases and no charges have been filed against him in connection with their cases. Interviews with him on the subject have not been fruitful. Rivera pleaded not guilty to the Georgia murders in July 2001. His trial date has not been established. He plans to use a defense of mental illness.

Dinwiddie's case remains open and unsolved. She is an graduate of Randolph-Macon Women's College, where she majored in art history. She was planning on enrolling at the University of South Carolina for graduate school at the time of her disappearance.

Above Images: Rivera, circa 2000