they were convinced that they had enough evidence to put robert denney away for life. ey's dna was found of the crime, seen but there is also evidence that they could not linked to him. >> we had alternative suspects. we had a lot to explain in the form of the science. >> the defense seized the opportunity, noting that there were any number of people who might have killed corey. >> there are still unidentified pieces of evidence at this crime. seen >> robert denney's attorney, rick sitka. >> there are underfunded to find a seaman's saints, fingerprints, hairs, in the victims hands. so, it is a question of who done it. >> not a question of denney she did it, he says. >> to underscore, that denney even took the stand to show jurors that he was just a void extort, not a monster at the door. but it did not work. after a three-week trial, the jury needed less than an hour 200 verdict. guilty of first degree murder. >> denney was sentenced to life in prison, which is where we met for this interview. >> did you murder corey parker? >> no i did not. >> he believes the sins of h