Michelle Parker and Dale Smith, a formerly engaged couple, appeared on the People's Court earlier this month. After the show, Parker mysteriously vanished.
Now Smith is in the wind as well, having just been named the primary suspect in her disappearance, according to Orlando, Fla., Police Chief Paul Rooney.
Officials confirm Smith, who appeared with Michelle Parker on the show, arguing over the engagement ring he have her, is the target of the investigation.
Chief Rooney says Smith refused to take a polygraph test in the case.
Parker's mother, Yvonne Stewart, made a plea during a Monday news conference: "If you could have avoided this Dale, if you had cooperated with the police and if you took a polygraph test when they asked you, you could have avoided a lot of stress."
"We're not going to stop until we find out who did this," she adds.
According to public records, the pair was involved in a domestic violence case involving children in 2009. Parker and Smith have 3-year-old twins together.
Parker has been missing since Nov. 17, the day the show aired.