The Spymaster's Predicament

Publisher's blurb: A corrupt Chief in Command for the Nighthawks, a generous widow with more than skeletons in her closet, a young Spymaster in desperate need of help, a coming state visit by neighboring Kingdom of Rychker, a notorious smugglers organization working underground. Does your Party have what it takes to solve the mystery of the intercepted note? A four hour D&D 5th edition adventure for four level 3 characters