Hammel left her place of employment, 24-Hour Fitness, in Houston, Texas on March 23, 1998. A co-worker dropped Hammel off at her apartment in the 1200 block of Wilcrest at approximately 2:00 p. m. Hammel's boyfriend saw her at her residence one hour later at 3:00 p. m. He left the apartment and returned at approximately 6:00 p. m. , by which time Hammel disappeared. She has never been seen again.