Here is a quote from dynoguy88 on a different thread:

"Don Devereaux was interviewed on 2 segments, although the two stories were somewhat intertwined. If you recall from one of the earliest seasons, he was the journalist from Phoenix that investigated the Charles Morgan death case. (Morgan was shot to death in the Arizona desert, most likely because he found out too much information regarding several organized crime divisions.) In the segment, Devereaux smartly pointed out how absurd it would be for a man to put on a bullet proof vest, drive out to the desert and shoot himself in the back of the head. Not to mention, Morgan's business papers were never found after his body was discovered. He was clearly on the run the last couple months of his life.

Just a couple months after Unsolved Mysteries aired the Charles Morgan case, another Phoenix man was shot to death, right accross the street from Don Devereaux's house. His name was Doug Johnston and it is believed that the bullet that killed him was actually meant for Devereaux because he drove the exact same model of car. Devereaux had uncovered too much info regarding the Charles Morgan case and the killer/killers were probably furious when they saw him being interviewed on Unsolved Mysteries. A case of mistaken identity though ended with Johnston's death. Devereaux came back for another segement to talk more about the cases and how he is most likely being targeted for knowing too much."

Any more up to date info on the case? Is he still in fear for his life or has anyone else been killed?

I am not sure. I'll have to see if I can find any more info through GOOGLE. I would imagine that Don Devereaux's life is still in danger.

Side note - Also mentioned in the Doug Johnston segment was Don Devereaux's contact with a journalist from Washington D.C. named Dan Cassolaro. Apparently, Devereaux agreed to share with Cassolaro information he had found about the Charles Morgan case, but before Devereaux could even mail his reasearch, Cassolaro was found dead in a hotel room in Virginia. (His death was featured on UM as well.) Although, he was killed for finding out too much information on different cases on the other side of the country. I'll see what I can find, though.

It sure is dangerous being an investigative journalist in this crazy world. Once you find out too much information about something, you could very well be on the run for the rest of your life.