I have been reading that there will be this new serial killer the finale will focus on, named Lazarus, right?
In this case, the writers are doing a good job keeping my hopes up, as St. Lazarus was the subject of a miracle of Jesus who restored him to life. The Lazarus Syndrome was even mentioned once in the Mentalist (season 2 episode 17) by...Rigsby.

My obsessed brain wants to see in Lazarus nothing more than a Red John restored to life for our greatest pleasure.