Uns quants dies de gener

January 1952. Thirteen years ago the Civil War ended and Miquel Mascarell met Patro before he was arrested and sent to work in the Valley of the Fallen. Now retired he continues to help David Fortuny in his detective agency, the problems do not stop and, once again, he will be forced to intervene in a most unique case. In the blink of an eye, he will be involved in a diabolical succession of events and will face one of the most important decisions of his long police career, that of doing justice on his own contrary to his principles or staying on the sidelines knowing that dozens of murderers can go free.