Conversation so far:
What was the main outcome behind season 2 of Hanibal Lecter?
Hanibal Lecter the titular serial killer would nearly be choked to death and one that would leave the FBI honcho with a shard of glass in his neck
Why was the FBI after hanibal lecter?
Hanibal Lecter breaks Verger's neck with his bare hands, paralyzing him from the neck down
Why did Hanibal Lecter break Verger's neck what lead to this tragedy?
Mason Verger is an enemy
Was Graham aware or a part of what was happening when Hanibal lecter breaks Mason Verger's neck?
Hanibal Lecter has Graham's tacit approval
What was Graham's role in season 2 of Hanibal lecter?
Graham, who is now institutionalized, attempts to convince his skeptical former colleagues that Lecter is the real killer

Question: Did his colleagues believe him or do something about it?
Self-contained rewrite: Did Graham's  colleagues believe him or do something about Hanibal lecter being the real killer?