Cave monsters

"Yes, I heard she is the one guarding the River of Flames. Do you have any idea about the humming voice? When we entered here, we heard a humming voice of a woman, then there was suddenly a mist and Orion, my friend, just vanished all of a sudden. What I'm thinking is that Nerissa was the one behind it, since I have read on a book before that Nerissa was an evil witch who lured many men and killed them all. Because of her doings, she was punished by the goddess of fire and made her the guardian of this cursed place."

"Yes, that is true. She can indeed lure men with her humming voice and that is probably the reason why your friend just suddenly disappeared."

"How about you? You are also a man. You would be affected if she will start humming again."