Five months after he was found stabbed to death on a riverbank, detectives say they're still not sure whether high flying Durham solicitor Peter Maine was murdered or took his own life.
And now after months of exhaustive inquiries they're trying to trace three mystery figures who could hold the answers.
Watch Gregg Easteal's report here.
More top news
Durham County Council has called for a full public inquiry into the policing of picket lines outside the Orgreave coking plant in 1984.
Students from Sunderland College will now have the opportunity to work with Sunderland AFC.
The University of York is building several new teaching and leisure facilities during the next 18 months at a cost of £59m.