. >> reporter: aaron lee is a vegas detective who says cannon should feel right at home in sin city. >> this was a classic con man. he did everything right to make people feel comfortable when he came in the store. >> reporter: cannon is shown here scouting the store for the first time. weeks later, he's back, with a wave, a smile and nerves of steel. >> he was very well-dressed, very well-mannered and he came across like average joe citizen. >> reporter: six diamonds come out of the safe and arrive at the counter. cannon repeatedly wipes his hand on his sweater to keep it free of moisture. in this line of work, sticky fingers are needed, not sweaty fingers. and in an instant, half a million dollars in diamonds and jack cannon vanish out the door. it's detective lee's job to find him. >> at times as a detective, you have to put yourself in their shoes. and the greatest question that i found myself asking was, if i were them and if i just made $500,000 in less than five seconds, why would i stop? >> reporter: lee gets a tip. >> i believe it was an insurance investigator, said hey, you

lee aaron sold with the historical sew sigh of it of pennsylvania and went to work needly when we told him about the discovery of dozens of coffins made for adults and tragically children. they were part of the first baptist church burial ground snaebd 1707 which benjamin franklin was a year old. they should have been moved to another cemetery by 1860 and someone clearly didn't do their sglob it's a business unfortunately and sometimes it's cheaper to cut corners in a business. >> arnold showed us this atlas from 1862 green indicates a burial ground. this specific site white meaning a building existed over the remains. for centuries people walked by with no clue. forensics crew from rutgers were on scene most of the day digging and preserving. >> one of the goals of the project is to very carefully recover the remains and give them a full analysis so we really understand who we have here. >> the coffins were far below the standard 6 feet we know today that doesn't mean they were buried deep. layers of streets have been added over time. not surprising to philadelphia historian ed major

lee aaron sold with the historical sew sigh of it of pennsylvania and went to work needly when we told him about the discovery of dozens of coffins made for adults and tragically children. they were part of the first baptist church burial ground snaebd 1707 which benjamin franklin was a year old. they should have been moved to another cemetery by 1860 and someone clearly didn't do their sglob it's a business unfortunately and sometimes it's cheaper to cut corners in a business. >> arnold showed us this atlas from 1862 green indicates a burial ground. this specific site white meaning a building existed over the remains. for centuries people walked by with no clue. forensics crew from rutgers were on scene most of the day digging and preserving. >> one of the goals of the project is to very carefully recover the remains and give them a full analysis so we really understand who we have here. >> the coffins were far below the standard 6 feet we know today that doesn't mean they were buried deep. layers of streets have been added over time. not surprising to philadelphia historian ed major

aaron vallejo. prosecutors are saying little and that may be for good reason. abc 7 news reporter vic lee has more. >> they're scum balls. >> i just needed to see the people who took my frankie away from us. >> reporter: in the courtroom, family and friends of frank navarro. as robert ruiz and aaron vallejo were arained for his murder. navarro was a beloved mentor to many youngsters as coach and president of a little league chapter in the south bay. he was a long-time security manager at a nightclub in downtown san jose. navarro was killed early sunday during an altercation shortly after he caught someone using another person's i.d. nightclub owner david powell. >> like the cowards they are, attacked frank and my team from the side. and in that scuffle, frank was stabbed and killed. >> reporter: ruiz and vallejo were arrested shortly after the attack. they were in a car that matched the one on the club's security video leaving the scene. abc 7 news has learned another camera recorded the scuffle and the killer running away, carrying a knife. navarro's family and friends are still in disbe