For the first time ever, six former heads of Israel's domestic secret service agency, the Shin Bet, share their insights and reflect publicly on their actions and decisions. Since the Six-Day War in 1967, Israel has been unable to transform its crushing military victory into a lasting peace. Throughout that entire period, these heads of the Shin Bet stood at the centre of Israel's decision-making process in all matters pertaining to security. They worked closely with every Israeli prime minister, and their assessments and insights had - and continue to have - a profound impact on Israeli policy. The Gatekeepers offers an exclusive account of the sum of their successes and failures. In the process it sheds light on the controversy surrounding the occupation in the aftermath of the Six-Day War.