There are plenty of adventure games on DS about solving crimes -- but none of them star the world's greatest detective. Sherlock Holmes, that is. There are already plenty of Batman games. But developer Frogwares and publisher Focus Home Interactive are taking care of the deficiency of Holmes games, with a new original story starring the detective (from an established adventure game series).
In Sherlock Holmes and the Mystery of Osborne House, Holmes and Dr. Watson are tasked by the British Royal Family with recovering the Queen's stolen genealogical records. To find out who stole the records (seriously? That's the case? It's not an impossible prison escape or seemingly supernatural murder or something?) "you will have to use your senses of logic and observation through dozens of riddles, puzzles and brain teasers of all sorts." No date has been announced by Focus, and we deduce from the company's status as a European publisher that there is no information about a North American release yet.