vanilla - actually, it has. . .
Not the “conversion to Christianity” in and of itself per se, but serial killer types have claimed reformation of one sort or another, been let free, and then gone back to killing again.
There are two issues here: the Christian concept of forgiveness and repentance, which are spiritual/religious concepts, and the psychology of this kind of criminal.
On the true-blue spiritual side, if Berk. says that he has embraced the love of Christ, then more power to him. It is his path to follow. But psychologically, admission of faith means less than nothing, particularly when the subject’s core psychology motivates him to manipulate situations to his benefit. And I personally believe that his admission of Christianity is not sincere, but rather another attempt to manipulate the system.
It’s easy for one to say they subscribe to a religion. It’s another story for them to actually live it.
As you are a Christian, I sense that you want to take Berk. at his word, to forgive him, and to embrace him as a sinner. At my most cynical, I see that as a desire to believe the miracles of your faith, but more generally I perceive it as a part of the magic of your religion, and I find it admirable. However, based on my (albeit amateur) understanding of serial killers and their psychology, I don’t see this as the honest admission of one who has found Christ and seeks redemption. I see instead the manipulations of a cunning and psychopathic mind.