Oh, yes. IMC, because the PCs decided not to go and look for the last caravan of the year, the caravan master, his wife and child, and all the guards and employees were killed by undead. They're now undead themselves, and could well end up causing the PCs problems down the line. Further, that last caravan carried a special ingredient needed to brew a potion that prevents Lake Fever, which is endemic in the winter. So lots of people in town will not live to see Spring.
The PCs then left town to take care of some business, and after that was done, they decided not to go back right away, but to pursue something they were curious about. So, they weren't there when the Baron was hanged by Imperial Loyalty Officers for the crime of being the only living relative of the emperor, who is fairly nervous about the firmness with which his buttocks are planted on the throne.
Would they have been able to stop the hanging if they had been home? Dunno. It would have depended on the tactics they cooked up. But now he's dead, so they'll never know. Of course they're feeling terribly guilty, especially since the heavily pregnant baroness just turned up at the end of last session, with imperial thugs on her tail. I can't wait to see what they do.