Sir John Vance is a retired businessman, enjoying a peaceful retirement at Blacon Grange, the country house he shares with his daughter. One morning, this idyllic existence is threatened by an anonymous letter, which invokes the rules of a secret society of which Vance was once a member - and entreats him to murder his one-time business rival Martin Stone. Vance dismisses the communication as a joke. But when Stone is found dead at his office, stabbed to death at his desk with an antique dagger from Vance's own collection, it appears that someone is playing a very nasty game, and Vance is forced into a series of cat and mouse encounters with Scotland Yard. But the real killer is still at large and the game is not over yet...
Originally published in 1936, this is a vintage crime thriller from the golden age of British detective fiction.