It was one of the most audacious murders of the cold war: the émigré Bulgarian writer Georgi Markov was waiting for a bus by London’s Waterloo Bridge when a man bumped into him with the tip of his umbrella, pushing a tiny poisoned pellet into his leg. Four days later he was dead.
A Danish TV documentary out this week sheds new light on the prime suspect in the 1978 killing, the Italian-born Bulgarian agent Francesco Gullino, known as Agent Piccadilly. It also raises a whole range of new questions about why Gullino was never arrested for the killing.
