Langdon's Challenge

On his deathbed, a grand mason of 32nd rank launches the ultimate challenge to his good friend, Professor Robert Langdon. While still in college, Langdon was fascinated by the stories and life lessons of his elder friend. However, he always had to prove that he is worthy to learn them. Things are not different this time, and the Mason reveals that in his office is hidden one last secret. Get your friends and try to unravel the mystery!