The Art of Detection is the fifth book in the Kate Martinelli detective series, but the first one that I've read. In this book Martinelli, a hardworking lesbian detective living in foggy San Francisco, discovers one of the strangest crimes of her career. A man in a Victorian silk dressing gown has been found murdered, his body dumped in the Marin Headlands. When Martinelli enters the victim's house, she finds that the robe was not the only Victorian item that the man owned; his living quarters are a near perfect replica of apartment at 221 B Baker Street, as described by Sir Arthur Conan Doyle. With the famous consulting detective unavailable, it is left to Martinelli to figure out who killed this Sherlock Holmes obsessive and why.