my OPINION is as follows....
If i was right and Purity made an assumption, then Purity should use the virus ability on Terro, and leave the rest of us to vote off Brion.
If i was wrong, and Purity without a doubt knows %100 that the gambler targeted themself and not the scenario i posted, then unless theres another way to explain things, as far as Purity's point of view is concerned, Dema is then a liar and should virus Dema.
*leaves two cents on the table before he walks out*