Deana Marie Schwark, also sometimes recorded as Pryal-Schwark, disappeared from Round Lake Beach, Illinois, in early 2013 at about age 36. She was described as having brown hair and brown eyes, between 5 feet 1 inch and 5 feet 5 inches tall, and weighing between 120 and 150 pounds.

At the time she vanished she was staying with friends and reportedly left after a disagreement that led them to ask her to move out. After that falling out she stopped communicating and there were no confirmed sightings. The Michigan State Police were noted as handling the investigation for reasons not publicly explained, and her case was entered in NamUs as MP28148.

Very few public details or updates followed her disappearance, leaving the circumstances and her whereabouts unresolved. If anyone knew Deana, saw her in early 2013, or has information that could help, please come forward.