Susan Jo "Sue" Walls, 54, the wife of victim Larry Walls Sr., and their daughter Dawn Walls, 27, of Antioch were arrested Saturday night by Tennessee Bureau of Investigation agents.
Sean Gearhardt, 20, and Jason Starrick, 25, both who share an Antioch apartment with Dawn Walls, are charged with criminal homicide. The women are charged with criminal responsibility for the conduct of another to commit criminal homicide.
The two men allegedly killed Walls while the women were at a Chuck E. Cheese restaurant in Nashville, officials said. Both men were arrested Friday.
Sue Walls admitted the plan under questioning by law enforcement, officials said.
The TBI responded after being requested by the Bedford County Sheriff's Department and the district attorney's office. Agents along with members of the Nashville Crime laboratory's Violent Crime Response Team gathered evidence from the scene.