"I admit it, you got me cold, but understand that I had to do it. What else could I have done? It was just something that had to be done, for the greater good. I didn't enjoy it. I didn't take any pleasure in burning my things. There was a whole life, and it is all gone now, but I did it, because I had to do it. There's just no way to get around it."
You start make yourself tremble violently, as if you are going into a seizure, and begin gargling up spit, pretending to speak in tongues. They're buying it! The Good Cop runs to the door to call for someone to get help! Your ruse is working!