Grey mask - Patricia Wentworth

Miss Silver must foil a plot to murder a beautiful young heiress

'Ranks with the best of the golden-age detectives' Daily Mail

Furious at being jilted at the altar by his once-fianc Margaret Langton, Charles Moray left England behind him. Now, four years later, he returns to his family home, only to find it unlocked and with a light burning in one of its abandoned rooms.

Eavesdropping, Charles soon discovers that a criminal gang has been using his house to plan a vicious crime. The target is the beautiful Margot Standing, who is due to inherit a considerable fortune. And what's more he recognises the voices of one of the conspirators - his lost love Margaret Langton.

How did Margaret come to be involved? And who is the terrifying masked man who has her in his thrall? Charles contacts Miss Silver to unravel the mysteries of the case and, if she can, save Margot Standings life.

'A first-rate storyteller' Daily Telegraph