Karen Mack was 33 when she was last seen in Dallas on February 27, 2004. Her disappearance was abrupt and the circumstances of her last known whereabouts are unclear. Initial efforts after she vanished included searches of areas she frequented and interviews with people who might have had contact with her, but those steps did not produce definitive leads.

The case drew attention from local agencies and members of the community, yet the trail went cold and the disappearance remains unsolved. Authorities continue to ask anyone with potential information to come forward. If anyone knew Karen, saw her in late February 2004, or has information that might help locate her, please share what is known.