pl playwright in his native country of bulgaria but dpeekted to the united kingdom when authorities started to censor him and ban his plays. in 1978, markov walked across the waterloo bridge over the river thames. after he got to this bus stop he felt a sharp pain in his right thigh and later said he remembered seeing a man next to him fumbling with an umbrella. markov did not know he had just been victimized in a james bond-like cold war plot. the umbrella was actually a poisonous gadget that shot out this tiny platinum ball, a ball containing the deadly poison ricin. in this documentary, the umbrella assassin which aired on pbs, the emergency room doctor who treated him tells what happened when markov came in. >> when i first saw him, he was fully conscious. he was feverish but he was also pointing to an area on his right thigh which he said was swollen and painful, and indicating that this was the area in which he