Science and invention in Birmingham 1054 Mk XVIs) had been built. CBAF became the largest and most successful plant of its type during the 1939–45 conflict. As the largest Spitfire factory in the UK, by producing up to 320 aircraft per month, it built over half of the approximately 20,000 aircraft of this type. 1944: Anthony Ernest Pratt takes out his first patent for a board game named 'Murder', this is later to become the world-renowned murder mystery game 'Cluedo'. 1946: Chance Brothers produce the first all-glass syringe with interchangeable barrel and plunger, thereby allowing mass sterilisation of components without the need for matching them.
History of crime fiction fit into the extensive set of rules and regulations for police detectives: Hard-boiled crime fiction just uses a different set of clichés and stereotypes. Generally, it does include a murder mystery. However, the atmosphere created by hard-boiled writers and the settings they chose for their novels are different from English country-house murders or mysteries surrounding rich old ladies elegantly bumped off on a cruise ship, with a detective happening to be on board. Ian Ousby writes, Another author who enjoyed writing about the sleazy side of life in the U.S.A. is Jonathan Latimer. In his novel "Solomon's Vineyard" (1941), private