As soon as Bisclavret saw the knight his wife ran away with, he attacked. He sunk his teeth into him and dragged him down. The King along with everyone else was surprised as he had never hurt anyone before
Hey! Stop that!
What's he doing?
The king and Bisclavret went hunting not long after and sought shelter in the country. Bisclavret's wife heard of this and headed to the castle the next day.
As soon as Bisclavret saw the woman, he ran at her at full force and tore her nose off. Knights closed in on him and were about to tear him apart until...
Wait! This beast has stayed and been close to us for awhile. He never touched or shown wickedness towards anyone except this woman. He must have some grudge against her and her husband.
This is the wife of the knight you used to like, who's been missing for so long.
The men suggested torturing her to see what she knows. It worked. She told them everything: how she betrayed him, and taken his clothes and the story Bisclavret told her.