Need help identifying a serial killer.
I’ve tried every google search imaginable trying to find a name but so far have been unsuccessful. I think this guy was located in either Texas or Arizona. His case was featured on a couple of true crime shows. The details I remember was he was a compulsive liar about his or his grandpa’s military service (sorry I can’t recall which) and that he claimed his victims were criminals or deviants and that’s how he justified it. I remember he killed one of his victims by shooting them through a window while they lie in bed and he was outside. I also believe his first victim was a really young man who he claimed was a gang member and who he picked up the day of and went to shoot guns with. I also seem to remember his girlfriend might have had some involvement. I know this isn’t a lot of information to go on but any help would be greatly appreciated. Thank you in advance.