investigators looking into melissa lewis's murder had been thrown a curveball. r boss had been running a giant ponzi scheme that also involved her best friend, debra. both denied melissa knew anything about it. then the massive fraud was ruled out as a factor in her death. now, prosecutors were ready to bring debra's ex-husband to trial. here is dennis murphy with the conclusion of the betrayal. >> a funny thing happened. he exhibited bizarre behavior and stopped communicating with attorneys. still in custody. in and out of facility treatments for years until doctors found him competent again. finally in the summer of 2016, eight years after the murder, tony went on trial. >> tony, the defendant in this case. >> prosecutor argued that tony, fuelled by a jealous rage, waited in the bushes for melissa to come home. followed her in the garage and launched a brutal attack on his wife's best friend. >> it's a hands on, personal murder. it takes time, it takes premeditation and why, because she was a friend. >> but the residue of pepper spray all over the garage was ev