People go in but never come out
From the introduction:
A small village named Skirl Village located where a sparse forest meets a cliff face is the home of around 20 people. Two of these people were betrothed to each other. Ameriel the bride and Pirith the bridegroom. The couple seems happy and are looking forward to their marriage. The ritual of marriage in the village is preceded the day before by the bride walking the forest contemplating her life and making sure she wants to marry. The bridegroom drinks at the only inn in town, "The Absent Priest", with the bride's father, and tries to convince him that he’ll do right by his daughter.
A five to six hour adventure adjustable for one to six 1st-3rd level characters.