A good spy needs a very particular set of skills. But there's only so much that training can prepare you for. Tradecraft - the real business of spying - has to be learnt on the job. In the first installment of an exciting two-part special, Vanessa Kirby brings you the most cunning and courageous examples of tradecraft from the series so far. Could YOU make it in the field? From SPYSCAPE, the HQ of secrets. Narrated by Vanessa Kirby. A Cup And Nuzzle production. Series producer: Gemma Newby. Produced by Frank Palmer. Music by Nick Ryan.