Chuwit has been around for long enough (and involved firsthand) and knows enough people to be fully informed on the in's and out's of the day to day workings of the police force, and probably more knowledgeable than the majority of the police force.
why would you rattle the golden goose - and in-depth review of some of these peoples finances would be interesting. But guess any large increase of funds would have come from dead friends, so all above board.
Well, they are very experienced resulting from the thorough and faultless investigation and autopsies of a couple of British back packers a few years back, they established without any doubt a couple of Burmese guy were guilty of the murders.