The family of Robert Durst's first wife, who went missing, is suing him for $100 million. Durst has long denied any involvement in Kathleen McCormack's disappearance—an unsolved mystery that resulted in her being pronounced dead six years afterwards. The suit alleges that Durst abused his first wife, Kathleen, and then covered up her murder. The lawsuit claims that this prevented them from giving her a proper burial.