To Catch a Killer: Nelson Serrano Forty Eight Hours : Season 20 Episode 21

When several family members didn't show up for a birthday party in December, 1997, Phil and Nicoletta Dosso drove to their business to see where everyone was. As correspondent Harold Dow reports, what they found inside was beyond their comprehension: three of the family members and their long-time friend and partner were all shot execution style. With no forensic evidence, the case would be hard to crack and authorities recruited one very tenacious cop to tackle the case. Would he be able to track down the killer?