Micheal and Charles scene Devised

In my scene with Dom. We ended up putting a little twist on it. While the audience is thinking all along that I am a psychotic killer. They soon learn that I am just a normal man who has lied to get out of going to jail. But since being in the mental institute being ploughed with medication he starts to  Believe he is insane. So during the scene when Dom is actually revealing that my character is not insane, and only feels it because of the medication, My character starts to freak out of fear that he will be transferred to a prison. 

During the scene my character is very non communicative. Until Dom starts reading facts about my characters murder and family history. At this point my character comes to terms with the fact he is being discovered and his lies are coming out. 

So at the end of the scene when Dom has worked Michael up into an angry stupor. Michael goes to attack Dom with the pen Dom is actually using to write notes with. I feel this would make the audience feel uneasy that I'm not actually crazy. I'm just a killer who has been let to roam a mental institute and they are all stuck in with me. 

Fortunately for the audience I am dragged away at the end by the doctors away from Dom. Whilst I shout threats at him about killing him and his family. I feel my scene would have had a creepy effect on the audience. Having them realise that half the people in the institute aren't actually crazy. Just natural born killers.