non-drowsy allergy relief . >>> for almost two decades, here's how lottie spencer talked about waseem daker>> i think daker is evil. he's pure evil. he's a monster. >> but then she changed her story. calling him a victim. >> you know what, i messed up really bad. despicable. >> lottie's reversal was astonishi astonishing. in the years since carmen smith's murder, she had built a new life. she was a single mom again, raising her young son in a new home. by recanting her testimony, she put all that at risk. >> how worried are you right now that you could go to jail for perjury? >> i'm very worried. i know that i'm facing prison time. there will be severe penalty for what i do. i don't want to be ripped away from my little boy. i have everything to lose. >> a year after daker's conviction, the hearing began on the motion for a new trial. daker again representing himself, called the dna expert to the stand. >> a man sleeps in a blanket, can his hair transfer to the blanket? >> yes. >> if a man has sex on the blanket can his hair transfer got blanket? >> yes. >> daker's chances really hinged on