The Missing Bride.

During a wedding party, according to tradition, hide-and-seek is played in a local abandoned castle. The bride falls into a hidden corridor. As she enters a room, the door falls shut behind her. Inside, she finds a dead woman and a book that says she cannot get out of here. However, a cat taking her scarf outside is her salvation. The cat puts the searchers on the right track, and the groom finds his bride.