S1·E16 Bluebeard

Josephine's dreams of marrying a prince seem to come true when one sends for her in her forest home. Though her brothers are wary of her wedding a man none of them has met, she accepts eagerly - but is startled by his striking beard of blue. The prince, who provides Josephine with every luxury until she becomes haughty, has only one locked, mismatched room in his castle he will not discuss. When he leaves her with his keys and instructions to see that one is not used, Josephine is lured by it to the forbidden room, and a terrible secret.