killing yourself in the front yard, you don't need to bring the gun into the house. you don't need to have an extra magazine with you. i believe that something much more sinister was going to happen that day. >> reporter: in fact, nothing happened. yanos went home. but he came back here to mary ann's house a few days later. it was on the friday before the murder. he met with mary ann alone. and had an epiphany. it was something he referred to in one of the conversations the police recorded between yanos and mary ann. >> i left friday. it never clicked until i came