The Ghost and the Peddler (5E)

Publisher blurb: The Ghost and the Peddler is a short adventure for three to five characters of level 3 to 5. You can play it any time the PCs need to travel through scarcely populated land for a few days. Jack Flanagan is an apothecary traveling around the world to help those in need. Ever since his father died, Jack has felt unusually busy. The people around him experience strange accidents and suffer from unlikely diseases and parasites. Jack believes the ghost of his father is haunting him. Will your PCs be unfortunate enough to meet Jack and travel with him?