David Barnseley
David Barnseley asked John Drake:

Deeply impressed with 'Agent of Death' it feels so like reality, I have to ask if the substance Mem Tav really exists or was in research by the Nazis or anyone else? Best wishes, from David Barnseley

John Drake Dear David, Thanks for the kind words about the book, and no, Mem Tav does not exist except in the imagination, but I hope the fake biochemistry is convincing. All very best, John Drake

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