As many of you have read or heard Charles(Chuck) Robbins was arrested one day after being released from AZDOC for the murder of Josh Calkin. He is the second person named in this murder and that would be the key word second. So yes Chris Mason is still awaiting trial which will take place in 2019 for this murder. There is no Conspiracy, Chris Mason is still behind bars. He is not drinking on a beach in Mexico. And this is not a new development Chuck Robbins was named in the original discovery by a witness as the person that delivered the final snap to Josh Calkin's neck. Now as for the trial taking so long for Christopher Mason, well actually it is right on time. Being dubbed the "Aryan Brotherhood Murder" makes it a capital murder and they normally take years to wrap up.
https://www.azcentral.com/story/news/local/phoenix/2018/09/28/charles-robbins-charged-ax-killing-joshua-calkins/1459799002/