Ricin immunogenic in mice, rabbits, and humans. It has completed two successful clinical trials. Ricin has been involved in a number of incidents. In 1978, the Bulgarian dissident Georgi Markov was assassinated by Bulgarian secret police who surreptitiously shot him on a London street with a modified umbrella using compressed gas to fire a tiny pellet contaminated with ricin into his leg. He died in a hospital a few days later and his body was passed to a special poison branch of the British Ministry of Defence (MOD) that discovered the pellet during an autopsy. The prime suspects were the Bulgarian
The Poisoned Chocolates Case discarded mistresses; and some more. At the very end of the novel, however, there is no doubt as to the identity of the perpetrator. The Poisoned Chocolates Case The Poisoned Chocolates Case (1929) is a detective novel by Anthony Berkeley set in 1920s London in which a group of armchair detectives, who have founded the "Crimes Circle", formulate theories on a recent murder case Scotland Yard has been unable to solve. Each of the six members, including their president, Berkeley's amateur sleuth Roger Sheringham, arrives at an altogether different solution as to the motive and the identity of the perpetrator,