http://www.sherlockian.net Sherlockian.  A portal site all about Sherlock Holmes

http://mysterynet.com MysteryNet. (4/5-12) MysteryNet is the world's leading developer and producer of short-form and interactive mysteries for distribution and syndication across multiple media and platforms, including the Web and wireless phones. MysteryNet also provides a free resource, MysteryNet.com, that is a source of information and shopping for mystery books, TV, movies, and games. MysteryNet is also the official online home for mystery greats Agatha Christie and Nancy Drew.