Invisible ink & toad poison: tools of Elizabethan spycraft

How did spies plot and plant information in Elizabethan England? How easy was it to break open a confidential sealed letter and, if necessary, forge its contents? And how high were the stakes? Speaking to Elinor Evans, Nadine Akkerman and Pete Langman discuss the tricks and tools of Tudor spies.

The HistoryExtra podcast is produced by the team behind BBC History Magazine.

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