Much of the material had appeared in The Sunday Times and was based on Fleming's interviews with John Collard, a member of the International Diamond Security Organisation who had previously worked in MI5.
Большая часть материала появилась в The Sunday Times и была основана на интервью Флеминга с Джоном Коллардом, членом международной организации алмазной безопасности и бывшего агента MI5.