Alan Turing is the subject of a talk being hosted at Bletchley Park this week.
No surprise there perhaps, but the man discussing the ingenious famous codebreaker is able to give a unique family insight into the mathematician's work and life.
Turing's nephew, Sir John Dermot Turing will be giving his own commentary on the life of the most revered of characters at Sunday's (April 3) event.
Sir John followed in his Uncle's footsteps, and was educated at Sherborne and Cambridge, before making tracks into the legal profession.
He now serves as a trustee of Bletchley Park, and you'll be not at all surprised to learn that he holds interests in both history and codebreaking.
The talk will take place between 2pm and 3pm, followed by a Q&A session over a cup of tea and slice of cake.
Sir John will then sign copies of his book, Prof. Alan Turing Decoded.
To book tickets visit www.bletchleypark.org and if you fancy making a day of it, feel free – arrive earlier and you can explore Bletchley Park at your leisure.