Bisclavret
"Bisclavret" ("The Werewolf") is one of the twelve Lais of Marie de France written in the 12th century. Originally written in French, it tells the story of a werewolf who is trapped in lupine form by the treachery of his wife. The tale was popular and was reworked as The Lay of Melion, and is probably referenced in Sir Thomas Malory's Le Morte d'Arthur with the story of Sir Marrok, who has a similar story.
Background
Marie de France claimed that she translated this lay, as well as the other eleven she wrote, from the Breton language, in which she claimed to have heard them performed. There have been many translations of her work into the English language, the translation noted below was done by Eugene Mason.
Synopsis
Bisclavret, a baron in Brittany who is well loved by the king, vanishes every week for three full days. No one in his household, not even his wife, knows where he goes. His wife finally begs him to tell her his secret and he explains that he is a werewolf. He also says that while in werewolf form he needs to hide his clothing in a safe place so he can return to human form. The baron's wife is so shocked by this news that she tries to think of ways she can escape her husband. She no longer wants to "lie beside him anymore." She conspires with a knight who has loved her for a long time. The following week, the baron's wife sends the knight to steal her husband's clothing. When her husband fails to return, she marries the knight. The baron's people search for him but finally relent, feeling that their absentee ruler has left for good.