The Sherlock Holmes its headquarters on the purported site of 221B Baker Street), decided to create an exhibition based on the fictional detective Sherlock Holmes. Four Holmes enthusiasts (with the support of the family of Sir Arthur Conan Doyle) designed and planned the exhibition, collecting materials (many of them donated) for display, including a Persian slipper to hold Holmes’s tobacco, a gasogene for Dr Watson's soda, and a jack-knife for Holmes to pin his unanswered correspondence to the mantelpiece with. In Abbey House on Baker Street Holmes' sitting room at 221B Baker Street was created. Each day crumpets were supplied by a local
Sherlock Holmes (video game series) shadow system, various post-treatment image effects, and high quality voice-over and cinematographic direction. In addition to the main series, Frogwares (by itself or through its casual division Waterlily) has developed four casual games, with simplified gameplay. They're generally less faithful to the canon, with fantasy and supernatural themes, for a younger target. "Sherlock Holmes: The Mystery of the Persian Carpet", was released in mid 2008. Unlike the preceding games, "The Mystery of the Persian Carpet" is primarily an object hunt game. The game was rated poorly and was generally considered a disappointing follow-up to "Sherlock Holmes Versus Jack the Ripper".