Yes, and Lindsey was probably only allowed to live because she was guessing the killer right time after time. I never saw anything clever from Lindsey, so that's my only guess as to what kept her alive--that and riding Kam's coattails to the finals. My guess was every night they had some kind of scoring metric, and if they said certain truths, they attributed a point system to it...and probably knowing the actual killer was some type of bonus points. Kris didn't go into too much detail about it over the twitter feed, but the impression that Lindsey gave to Kris is that Lindsey must have heard/seen something from Kris's acting that was a huge red flag for her that really wasn't a part of any specific clue meant for the game. In other words. Lindsey was lucky to make it that far.
As to Kam not guessing right on the killer and still wining: I'd rather have it this way. The alternative is more emphasis on the contestants guessing the correct killer in order to win, and so then you have somebody like Lindsey win just based on a hunch despite clearly not being the better player--no thanks. I would say this show was far more about politics than the actual investigating. Kam was actually a better killer than the fake killer/writers were. I'd say it's because of him that most of Geno's team died.
The highlight of this show was when Melina (being down 1 to 3 on the other team) came up to Kam's team trying to pry information from them, and said "let me guess, you found this, and you found that...etc." and she was pretty much right on all accounts. Melina was a far better player, and probably should have won instead of Kam...but Melina was just on the wrong side and got screwed for it>