Book
Traitor
Book 6 in the John Shakespeare series.
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An advanced optical instrument has given the Elizabethan navy a potential advantage over Spain. Spanish agents seek both the device and the men who understand it: the operative William Ivory and its inventor, the mathematician and astrologer John Dee.
John Shakespeare is sent north to escort Dee to safety as fears of another Spanish armada intensify. His route through the Catholic districts of Lancashire and onward to Martin Frobisher’s fleet exposes a plot reaching into government, while accusations against Shakespeare’s family force him to balance royal service against personal loyalty.