Between 15 June 1968 and 13 May 1996, the Polaris submarines of the 10th Submarine Squadron carried out a total of 229 patrols, travelling over 2 million miles. Wherever you sit on the nuclear debate, it makes an impressive tale; delivered on time and on budget essentially by a small group of naval officers and civil servants, the Polaris programme ensured that Britain had a Continuous at Sea Deterrence for twenty-eight years. Polaris is not just the history of the weapons, submarines and politicians: it is the history of those who were there. Combining through history with personal memories and photographs, Keith Hall has created a long-lasting legacy to a fascinating project and provided an insight into a world that no longer exists.