murder. as part of the divorce settlement, diana owed greg $120,000. the money was due three weeks after the date of the shooting. >> however, if he's dead, it would just go to his estate, which would ultimately come right back to miss lovejoy. >> reporter: in closing arguments, the prosecutor said there was no doubt diana lovejoy and weldon mcdavid had conspired to kill greg mulvihill. >> they didn't plan for jason kovach. they didn't plan for a bright bike light to light up mr. mcdavid laying on his belly. and they didn't plan to get caught. no reason to kill. they had 120,000 reasons to kill. >> reporter: what would the jury think? first, let's see what you think. hear what weldon and diana had to say when we visited them in jail. coming up -- a defendant's biggest regret. not what you might think. >> if i could only take back one thing, i would take that out of