when we come back, kandi hall has a decision to make and it will have consequences she never intended. deadly ones. coming up three unfaithful spouses and their lies are piling up. i could hear everything he was saying because the baby monitor was on. the hard part then was not a word he said was true. a word he said was true. ile? who s ready to learn today!? so powerful you can face anything. even these faces. invis is a powerful thing. invis is the clear aligner brand most trusted by doctors. and more predictable. invisalign. alice loves the scent of gain so much, she wished there was a way to make it last longer. say hello to your fairy godmother alice and long-lasting gain scent beads. part of the irresistible scent collection from gain!
attempted to commit suicide with the third shot. reporter: the theory backed up by forensics. the shots were fired from close range, two or three feet. a heavy concentration of gunshot residue only on robert hall s hands, and only one man s dna on the trigger guard. the dna matched mr. hall. i think mr. hall went to the walgreens in order to confront emmett corrigan, that he took a loaded gun, and rob decided that was his opportunity to get his kandi back. by killing emmett. reporter: why did he talk to emmett for eight minutes before he fired? the store was closing said the prosecutor. people were going home. i think he waited until there were no eyewitnesss and he executed emmett corrigan. reporter: a neat and tidy
it s the highest levels since world war ii. now back to dateline. welcome back to dateline. i m craig melvin. for months, kandi hall and emmet crigan had been having a late night affair. they was in emmet s pickup truck when kandi s husband called. and her young lover confronted him. soon, one of them would be dead. here is keith morrison with deadly desire. here at a walgreens drugstore in meridian, idaho, just before 10:00 p.m. on a friday night in march 2011, robert hall was a man on a mission. you can see it from store video. rob parked his pickup truck, roamed the beauty and cosmetic aisles. he was looking for kandi, also in a pickup truck, with her
will you please state and spell your name for the record? sure, kandi hall. reporter: kandi, who repeated the story on the stand that she told us of emmett pushing rob, emmett becoming enraged, of hearing the two men scuffle as she walked away. before she heard, but did not see the shooting. the only problem? she told the police a very different story the night it happened. that night you said you did not see or hear this altercation? is that right? i don t know. i don t remember. reporter: in fact, kandi changed her story about so many things, all helpful to rob s case. i m trying to clarify that your story has changed after speaking with your husband? things were remembered after talking to my husband. reporter: in fact, later, the judge made a comment outside the jury s presence. he said in all of his 30-some years on the bench, he had never seen a witness so thoroughly
both shot. one alive, one dying. and kandi hall entered that twilight zone where memories are made that can t ever be erased. though as you and the police department, the lawyers and the judge will soon see, they can certainly be amended. what we know for sure, she rushed to the pros straight body of one of those two men. i gave him a kiss on his cheek and will never forget, ever. he took that last deep very surreal, and was turning gray here to here to here. i didn t have much time to think of much, other than thinking to myself, oh, my god. he s he s dead. reporter: but which one? and what just happened?