"Sons of Anarchy" star, Johnny Lewis was declared "mentally healthy" until he came across an undisclosed drug. This drug supposedly triggered a "psychotic break" that he did not recover from.

Sources reported that he was never the same after that. He became very unstable as he tried to 'self-medicate' himself.

The doctors report that his condition is called a "co-occurring disorder" where a person abuses drugs in order to treat a mental condition.

Johnny was never stable enough to receive a proper diagnosis of his disorder.

They do not think that the landlady's murder had anything to with his drug rage. He had taken medication to stabilize him and that seemed to work, but 6 days after being released from jail, they believe that he stopped taking his medication and became very violent.