Everyone has a segment on the tape that speaks volumes to him or her. Quite some time after Flores has first thrown out the possibility that someone else was present at the crime, it becomes clear that Arias has stored that for use. In Tape #14, she has found her "out" based on this suggestion of a 3d person. He is asking if she took the gun with her (when leaving on her trip). She replies, "Oh, I didn't". He then asks, "Where did you get it?" No response, then "Did you bring it with you?" Arias replies in a weak matter of fact tone, "I never had it, actually--in my possession." This is the formation moment. She had already admitted to Flores that Travis had no gun, explicitly in the house. Not that she knew of. And the interrogator is hammering on the gun. How did it get there. She is being pushed through the corner and is mentally desperate. Therefore, she never had it. The masked intruders from nowhere drop deus ex machina. Nevertheless, she is equivocating in that answer & larding her denial in a way that rings so false. Profilers & speech analysts would make much of it. Yes, Arias, actually.