are you ready for the jury? reporter: this time in davenport, three hours from the first courthouse in otumwa. the prosecutors once again argued that seth s story defied logic. he would have to be the victim of one of the largest coincidences ever known, and that is he told his girlfriend hoe left his wife and less than 17 hours later some unknown assailant breaks in and kills the wife that he says she s going to leave. reporter: with a weapon which he hasn t brought with him. direct. with a weapon he hasn t brought with him. a mosberg 1,200 shotgun. a 12 gauge? yes. reporter: and seth they said had easy access to the murder weapon, the shotgun that his friend lucas kept in his house. is that the mosberg shotgun that you left behind at the one went residence when you moved out in may of 2012? yes. reporter: and the prosecutors argued only seth had a motive. they said seth and rachel s steamy texts and photos played like hay countdown to murder by