dekalb county district attorney robert james. >> no one had any idea who did this when it happened. >s after rusty's death, police had been floundering, trying to untangle rusty's business relationships. suspicious that he had been gunned down by a professional hit man, they were looking for a money trail to lead to his killer. chasing the money trail, did it cost you a lot of investigative hours and time? >> it cost us thousands of investigative hours and time. >> as it turned out, this crime wouldn't be solved by following the money. it would be solved by following the shooter's minivan, a vehicle that had been caught on the parking lot security cameras. weeks after rusty had been shot, investigators track the van to this rental agency and then contacted the man who'd rented it the day before the shooting. his identity would blow the investigation wide open. the man told them not only that, yes, he was the person who had rented the minivan, what's more, he said he was andrea sneiderman's boss. rusty's widow worked for this guy. was he the person in the police artist sketch? did andr