A clever mystery classic from one of Britain's greatest and most original crime writers, the author of The Daughter of TimeIn 1920s London, the packed queue for the city's most popular musical comedy is growing impatient.When the theatre doors open at last and the crowd surges forward, a man falls to the ground, dead-silently stabbed with a stiletto.Who killed him before melting away unseen into the night?As Inspector Alan Grant investigates, the mystery turns into a breathless manhunt leading from London all the way to the Scottish highlands and back, before at last a truth is revealed that shocks even the canny detective himself.This is an unforgettable classic from crime writing's golden age