<p>The light of an open doorway beckons through the mist of a London Particular one of those smothering fogs for which turn-of-the-century London was famous. But in reality—as Sherlock Holmes soon discovers—though the doorway does indeed offer respite from the fog it also leads to the gruesome remains of a double-murder. Two corpses a stolen diamond necklace a Russian connection and a dandified American writer who pals around with denizens of the theater—all add up to a murder investigation with international implications. Leave it to Sherlock Holmes who in a classic assemblage of suspects in a high-tone British men’s club employs his celebrated powers of deduction to reveal the guilty party.</p>