ms. lovejoy had made regarding the new moon and when it was, and when the peak point of darkness was, whichme they lured him out there. >> reporter: and the prosecution had one more piece of evidence for the jury. a potential financial motive for murder. as part of the divorce settlement, diana owed greg $120,000. the money was due three weeks after the shooting. >> however, it would go to the estate and come back to ms. lovejoy. >> the prosecutor said no doubt, diana lovejoy and weldon mcdavid had planned to kill greg mulleville. >> they did not plan for another person and they did not plan for a bright light to light weldon mcdavid on his belly. >> 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. >> and drama in court. when dateline continues ntinue fast. only thermacare ultra pain relieving cream has 4 active ingredients to fight pain 4 different ways. get powerful relief today, with thermacare. how do you keep feeli