After working for some time on decoding mysterious encrypted letters, the codebreakers realize that the ciphered messages might be written by Mary Stuart, the Queen of Scots herself, during a critical time of her imprisonment.
TRANSCRIPT
-Walsingham haunts George's sleep.
What prisoner could link Elizabeth's spymaster to these coded letters?
And then it hits him.
At 2 a.m., he emails his fellow code breakers.
I'm beginning to suspect that these letters are from Mary Stuart.
-For me, it took a bit of time.
At first I was a bit doubtful.
I am the doubtful type.
I always want to know exactly what's going on before I get carried away.
But if the letters really are from Mary Stuart, That's great.
That's really exciting.
-At first, I was also skeptical.
But the very next day the other proper names appeared, and I was convinced that these documents were in fact, linked to Mary Stuart.
-As soon a we realized it was Mary Stuart.
It was incredible.
I think we hardly slept for several nights.
It was really very exciting.
-The team realizes that these are lost letters from the most dangerous period in Mary's life.
When she was imprisone in England and kept under close surveillance by Walsingham, his web of informants.
Walsingham is Mary's nemesis.
She writes in one letter: Watch out for Walsingham because he's a clever man and master deceiver.