The 4th book in the acclaimed John Shakespeare Elizabethan mystery series. The Elizabethan navy has a secret weapon: an optical instrument so powerful it gives England unassailable superiority at sea, and Spain will stop at nothing to get their hands on this invaluable tool. A gripping historical novel that centres around the colourful character of William Shakespeare's brother For fans of CJ Sansom and SJ Parris, TRAITOR is the fourth in Rory Clements' acclaimed and bestselling John Shakespeare series of Tudor spy thrillers. Clements, winner of the Ellis Peters Historical Fiction Award, 'does for Elizabeth's reign what CJ Sansom does for Henry VIII's' Sunday Times