A casket of incriminating letters from Mary, Queen of Scots. Theletters would be an instrument of persuasion - or blackmail as othersmight call it. Whoever held them had a hold over the James VI King ofScots, now also King James I of England.But for Andrew, seventh Lord Gray, laying hands on the letters was notgoing to be easy. They were secure in the half-ruined Fast Castle thatclung to the sea-cliffs of Berwickshire. A castle that no one couldenter if they were not welcome.And so young David Gray, his bastard nephew, was sent on a perilousmission...A thrilling historical novel of 17th century Scotland from Nigel Tranter.