he was in a drug stupor and he shot them both. >> reporter: so if you were garrett kopp, wouldn't youplicate the man who turned you in to police? here is the thing, said christopher here, can understand kopp turning on him. but juliet, his own fiancee, when he heard what she told police, he said he broke down in tears. not because of what she said, but why she must have said it. >> as soon as he started reading parts of juliet's statement, yeah, i started crying. >> why were you crying. >> objection. >> overruled. >> i was crying bah the woman i was going to be marrying in five weeks lied to save herself. >> tears of frustration too, said christopher, how could he defend himself against lies when his police interrogator kept accusing him of murder. i told him he will not believe what i say. and twist my words to use them against me, you know. like he did with juliet. because there is no proof that i did anything. because i know i didn't do anything. >> reporter: so there it was. another theory for the jury to consider. but there was one more thing the defense had to do if possible --