A lawsuit has been filed by the parents of Thy Mitchell, accusing her late husband Matthew of planning the killings of her and her family. The lawsuit includes videos as evidence, which were reportedly recorded inside the family's River Oaks home. These videos were submitted by the parents and are said to have been taken in the days leading up to the deaths.

The lawsuit alleges that Matthew was involved in plotting the killings. Further details about the lawsuit and the evidence presented are available from the source, including the content of the videos and the specifics of the allegations against Matthew.