A file of correspondence and memoranda relating to a fortnightly British summary of Soviet intentions codenamed "Crystal Gazer". Subjects discussed in this file include instructions for the writing of the summaries, including advice on the concealment of secret sources; the secure distribution of "Crystal Gazer", including to the Prime Minister; an "indoctrination form" for those authorised to receive "Crystal Gazer" reports after receiving appropriate security vetting; and arrangements to minimise the risk of information leaks to the Soviets.