First investigates the writing table, discovered the card feature article for Alicia''''s letter, from the letter knew Carter before death diligently is seeking to use for copes with "old star" the name to call "to fill Si" the book, he has not been able to find; Little while ago, the mystical organization "the eldest child" already arrived the Duncan river area, the time has been extremely urgent, Carter hoped Alicia to be able with enough time in "stone" the hold ceremony. Carefully observes the bookshelf, discovered has two places to be very suspicious, uses the wooden ladder to investigate these two places, found two books standards, is about the world energy distribution research, the above said the entire world is proliferating the energy line, but the energy line intersection place point of intersection is the place which the energy gathers, in the world has three energies most abundant spots, respectively is located English Shi Zhen, is located the North America New England (the English colony) the Duncan river area, the South America Peru''''s capital; Another is the Duncan river guide book, inside describes said the Duncan river the cliff area has the intriguing underground channel, some until now still could pass through. After studies the book standard, investigates in the room the terrestrial globe, separately presses down English, the South America Peru, nearby the North America Canada elder brother''''s three buttons, the terrestrial globe opens, obtains the mystical book "to fill Si", the investigation "fills Si", takes down in the title page the gem. Enters the next door room, investigates the cabinet, obtains the candle, investigates on the dinner table the vessel, obtains a hard tray, again observes the hanging lamp, discovered dangles 玻璃珠 the string to be extremely suspicious, closes the lamp to the room entrance, saw the moonlight according to enters the room through the French window, is treating the French window use iron plate, the moonlight after the refraction according to on the hanging lamp, obtains another gem. Returns to the studio, moves the wooden ladder to falls to the ground nearby the clock, investigates the clock, inlays the gem in two scoop channels place, separately moves the clock the indicator to 4 o''''clock, 8, 12 also the rotation spiral spring, falls to the ground the clock to put aside, presently leaves to lead to the basement the channel. Uses the candle to enter the basement. In the inspection wall scoop channel gear drive, selects the size different four gears (to be red 小齿轮 does not use), from left to right separately installs the biggest gear, a big gear, a small gear, the smallest gear, and causes between the gear mutually to interact, lags behind pulls the floodgate, the actuation completes. Takes down is located place above the drive the spade pole, the spade opens stops up the gate the plank, enters, draws the tension bar, rides the elevator to get down. Goes through a strategic pass.