spencer ♪ ♪ for almost two decades, here is how lottie spencer talked about waseem daker. >> waseem you know what? i messed up really bad. despicable. >>lottie's reversal was astonishing. in the years since karmen smith's murder, she was raising her young son in a new home. by recanting her testimony, she put all of 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 and there will be severe penalty for what i do and 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 doctor, the dna expert, to the stand. >> if a man sleeps in a blanket, can his hair transfer to the blanket? >> yes. >> and if a man has sex in a blanket, can his hair transfer to a blanket? >> yes. >> the doctor laid the scientific foundation, but daker's chances really hinged on lottie. a hush came over the courtroom as a nervous lottie made her way to the stand and swore to tel