London, 1888. A dark conspiracy is secretly set up by Professor Moriarty to overthrow England's throne and Queen Victoria herself. Play as famous detective, Sherlock Holmes, to discover the power of the Queen's secret and why it must remain as such. Investigate! Question characters and find clues along the way to help solve this mystery! Examine! Gather additional items that will help you on your way. Use Your Wits! Solve over 40 exciting puzzles and brain-teasers like, Genealogical Tree and Hidden Card, to reveal unlockable, hidden content. Adventure! Choose from 2 different modes - Investigate & Collect or Puzzle Solving. Travel! Journey through 40 different environments, like Buckingham Palace and the British Museum and use the interactive map to change locations.