Vic Model News Today : Breaking News, Live Updates & Top Stories | Vimarsana

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 those two prosecutors. >> which was? >> when "dateline" continues. (coughing) ♪ breeze driftin' on by...

>> 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 wouldn't 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 killer's 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 the mcclelland crime scene, hoping for a new lead. >> so many people now have surveillance camer...