Ricin the attack on Georgi Markov another Bulgarian defector, Vladimir Kostov, survived a similar attack. Kostov was standing on an escalator of the Paris metro when he felt a sting in his lower back above the belt of his trousers. He developed a fever, but recovered. After Markov's death the wound on Kostov's back was examined and a ricin-laced pellet identical to the one used against Markov was removed. Several terrorists and terrorist groups have experimented with ricin and caused several incidents of the poisons being mailed to U.S. politicians. For example, on May 29, 2013 two anonymous letters sent to
Bulgarian umbrella Executioner". A type of this umbrella is used even in poliziottesco Italian movie The Police Can't Move in 1975. A Bulgarian umbrella was featured in the 2013 "The Americans" episode, "The Clock". A similar assassination (and attempt) were central to the plot of the 1978 "Quincy, M.E." episode, "Hot Ice". The 2010 episode "Marionette" of "Fringe" begins with an organ thief administering a paralytic with an umbrella. In the AMC series Breaking Bad, season 2, episode 2, Walter White shows his accomplice, Jessie, a small bag of castor beans which he explained, the ricin can be extracted and which was