Mrs Hudson and the Capricorn Incident: The latest in the bestselling series inspired by the great detective's housekeeper in Baker Street

It is spring in Baker Street, and London is preparing itself for the wedding of the year. It will be an international spectacle in which the young and popular Count Rudolph Absberg, a political exile from his native land, will take the hand of the beautiful and accomplished Princess Sophia Kubinova. A lot depends on the marriage, for it is hoped that the union will ensure the security and independence of their homeland.

When the princess subsequently disappears in dramatic circumstances, mem...