In this brand new big adventure, especially designed for Nintendo's handheld system, you play as the famous detective Sherlock Holmes and you will have to shed some light on curious events. When Queen Victoria's genealogical records are stolen, the Royal Family decides to put you in charge of the case and asks you to solve this strange mystery.

As always, followed by your wise and faithful friend, Doctor Watson, you will have to use your logic and observation senses through dozens of riddles, puzzles and brain teasers of all sorts. You will travel through dozens of beautifully hand-drawn places, looking for clues and new mysteries. You will also meet many charismatic characters who will help you solve this strange case and finally discover the truth!