County felt beaten up, too. Now actively involved in the case were the Wylie Police Department, the Collin County Sheriff’s Office, the Dallas Police Department, the Texas Department of Public Safety criminal intelligence division, the Texas Rangers, the Dallas County Sheriff’s Office, and the Dallas Institute of Forensic Sciences. Chief Abbott was welcoming one and all, so there were no real battles over jurisdiction, as so often happens when small-town police departments try to deal with big-city crimes.