right i have found 239 of the riddler trophies.the last one that i need to do is find all the joker teeth in arkham mansion.simple enough i thought.except that no matter where i have looked (and believe me,i have repeatedly looked everywhere in the mansion) there is no trace of any joker teeth to be found :banghead: i have gone over every inch of the place with a fine tooth comb,but to no avail :swear: (and yes i have looked in all the air vents e.t.c also) please don't tell me that i have to start from the beginning :facepalm: also i have found 23 of the arkham chronicle stones,but i still cannot find the last one (there are no question marks,anywhere on the map :shrug: sorry to be an idiot,but have been tearing my hair out trying to finish the riddles.thanks

http://www.gamesradar.com/batman-arkham-asylum-riddler-guide/#teeth