first time I ever heard of ricin was a news story, possibly on 60 Minutes. Here's the cliff's notes version from Wikipedia:
Georgi Markov
Born (1929-03-01)March 1, 1929
Sofia, Bulgaria
Died September 11, 1978(1978-09-11) (aged 49)
London, England
Occupation Writer, dissident
Notable work(s) The Truth that Killed
Georgi Ivanov Markov (Bulgarian: Георги Иванов Марков; March 1, 1929 – September 11, 1978) was a Bulgarian dissident writer.
Markov originally worked as a novelist and playwright in his native country, then governed by a communist regime under Chairman Todor Zhivkov, until his defection from Bulgaria in 1969. After relocating to the West, he worked as a broadcaster and journalist for the BBC World Service, the US-funded Radio Free Europe, and Germany's Deutsche Welle. Markov used such forums to conduct a campaign of sarcastic criticism against the incumbent Bulgarian regime. As a result of this, it has been speculated that the Bulgarian government may have decided to silence him, and may have asked the KGB for help.[1] He died as a result of an incident on a London street when a micro-engineered pellet containing ricin was fired into his leg via an umbrella wielded by someone associated with the Bulgarian secret police.
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