Vic Model News Today

Time of the murders. no one in the neighborhood owned a car like that. but the crown vic model is popular with law enforcement. so the fbi jumped on that angle. was there ever a thought that maybe this is one of our own? maybe this is a police officer doing this? >> that was not out of the realm of possibility. coming up -- investigators recheck the cases handled by mark hasse, this time to see which ones mike mcclelland also worked on. and -- >> there was only one common denominator for tho...

>> my husband. i mean, he stayed up all night with a gun in his hand. >> i know that i start carrying a gun. sleep with a gun under my pillow. >> reporter: even shannon, who wouldnt carry a gun before, now slept with protection nearby. >> we had big ol shotgun sitting on our dresser, just way -- ready to go, in case. >> reporter: the killers threat to unleash more violence in kaufman county kept the task force working around the clock. a special team scoured the surveillance video collected near...