Traitor

*****Part of the bestselling John Shakespeare series of Tudor spy thrillers from Rory Clements, winner of the Ellis Peters Historical Fiction Award*****

''[Clements] does for Elizabeth''s reign what CJ Sansom does for Henry VIII''s'' Sunday Times

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The Elizabethan navy has a secret weapon: an optical instrument so powerful it gives England unassailable superiority at sea. Spain will stop at ...