You agree to the officer's proposal. The patrol disappears, and the professor warmly thanks you for setting him free - by law, any black mark against…

You agree to the officer's proposal. The patrol disappears, and the professor warmly thanks you for setting him free - by law, any black mark against his name could get him fired from the university. As a sign of gratitude, he gives you a book he had on him at the time of his arrest, and promises to come tomorrow at the appointed time.