I think its tom folker

in a recent episode lorilie said that red john isnt a friend to patrick. she said that she knew that when they didnt go along when they shook hands.
http://www.youtube.com/watch?v=yUhkJLaWMEU
this is a video, in a part of it patrick speak to the media, he does say to the guy on the show a description close to red john's one. brown hair...etc

sorry about bad spelling, my english isnt that great.