How Come the Prophet Who Was Promised Turned into a Wolf?

When I woke up, I was trapped in a different world castle with nine other people. The mysterious voice announced: "Vote to execute one person every night and find three demon wolves disguised as humans." I drew the prophet card and was secretly happy that I was sure to win. Check the beautiful girl on the first night, the crystal ball shows: human. The next day she transformed in public and killed three people in a row. Before I died, I screamed: "Why did you lie to me?" She licked the blood and smiled: "Because I gave you your inspection skills."