Old Olga and Young Yvonne is a four- to six-hour adventure for 1st-4th level characters, designed for Dungeons & Dragons 5th Edition, with a village theme, hags and witches, an abducted child to save, some horror, and mysteries to solve! Willow Creek, a remote farming village, is in trouble: livestock is going missing and reappears gutted in the woods, crops fail and fields blight - and now the bastard child of young Yvonne has gone missing as well. What no one in the village knows: Yvonne is a budding witch secretly feuding with Old Olga, an evil hag in the woods - who now demands a human sacrifice from Yvonne in return for her child. Who can sort out this mess, bring back the innocent child, prevent a murder, and return peace and quiet to Willow Creek? This adventure can also be used as a mini-campaign sandbox. With the branching and inter-connecting scenes, locations, and NPCs it provides, combined with the guidance on how to run a "village adventure", the material provided here on more than 60 pages can easily cover up to eight hours of playtime. Included with this adventure are: + an original custom creature, the young witch + 12 original fleshed out NPCs, including personality traits and roleplaying tips + a toolset for creating villager NPCs quickly + 7 hand-drawn maps of important locations + 4 alternative story rewards (depending on how the adventure resolves)