A Bulgarian secret agent used an umbrella just like this one on a London street to kill Bulgarian dissident Georgi Markov in 1978. A standard umbrella was modified internally to inject poison into its target with the press of the trigger. In Markov's case, the umbrella contained a ricin pellet, which is next to impossible to trace. The museum displays a replica, made specially in Moscow for the collection. Boghardt says that in 1991, a room full of similar deadly umbrellas was uncovered in Bulgaria.