What about the role of the Mentalist?
Larisa, they definitely killed Mafia members because the description of the killer was "dean," and the military commissar couldn't have committed the murder on the first day; I was wrong about that. And by the way, why could the Mentalist have been a nerd? :) A nerd wouldn't get drunk, and if he did, he would spend a couple of days recovering from a hangover.