When Professor Layton's mentor, Dr. Schrader, turns up dead with no clear answer as to why, it's up to the renowned puzzle-solver and his apprentice, Luke, to unravel the mystery. The only clue thus far is a train ticket for the Molentary Express. What could it mean, and who - or what - might have caused Dr. Schrader's death? In order to find out, Professor Layton and Luke will embark on an odyssey filled with challenging puzzles which may lead them to an object known as the Elysian Box, rumored to kill all who open it. Gameplay As with other games in the Professor Layton series, gameplay in Professor Layton and the Diabolical Box is linked to a richly illustrated storyline, in-game environments and non-player characters (NPCs). Diabolical Box takes this further than the original game, with more locations to explore, significantly more animated cutscenes and the deeper level of voice talent employed. As players move through the game with an aim towards solving the overarching mystery they will encounter characters who can forward their progress if they return the favor in advance by solving a puzzle. These brainteasers cover everything from mazes and riddles, to logic and sliding puzzles and everything in-between. There are no time limits on puzzles and 'hint coins' found and earned throughout the game can be used to purchase up to three hints per puzzle. The game cartridge contains 150 puzzles, but it is not necessary to solve every puzzle in order to finish the game. Those who do though and yearn for even more can access additional puzzles via a DS and/or DSi Wi-Fi connection.