In all honesty, when Derek had walked into the police station. He had been expecting to go through a great deal of difficulty. After all, despite wanting cooperation from the public. The police were not known to be very cooperative. Especially towards two strangers who just showed up one day, and wanted to see evidence from a cold case that was 20 years old.
In fact, when he and Emily had given their names at the reception and had stated that they wanted someone who had been part of the Haven-Molson case. Derek had not been holding out hope that they would find anyone.
It had been years after all.