

21. Death on the Thames: The Poisoned Umbrella (Ep 2)
Was an umbrella too obvious a murder weapon for an assassination in the heart of London? Why were the KGB hesitant to do the Bulgarian government's dirty work? And how do scientists work with spy agencies to identify lethal poisons? Georgi Markov, the Bulgarian dissident writer, is dead. But, who murdered him? Was it…
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