The top mistakes in Duplicity http://www.moviemistakes.com/film7728 en Sat, 24 Apr 2010 05:55:38 +0000 153112 When they show Tully listening to a conversation between Julia and Clive on a speaker, as the camera moves back from Tully's face the backside of the speaker is seen. There are no cables attached to the speaker, which would make it impossible for him to be listening since there are no mic cables attached to it.