Designed as a city dwelling for the modern age, Dolphin Square opened in London's Pimlico in 1936. Boasting 1,250 hi-tech flats, a swimming pool, restaurant, gardens and shopping arcade, the complex quickly attracted a long list of the affluent and influential. But behind its veneer of respectability, the Square has become one of the country's most notorious addresses; a place where the private lives of those from the highest of high society and the lowest depths of the underworld have collided and played out over the best part of a century.

This is the story of the Square and its people, an ever-evolving cast of larger-than- life characters who have borne witness to, and played pivotal roles in, some of the most scandalous episodes of the twentieth and twenty-first centuries. From Oswald Mosley and the Carry On gang to allegations of systematic sexual abuse, it is a saga replete with mysterious deaths, exploitation, espionage, illicit love affairs and glamour, shining a light on the changing nature of British politics and society in the modern age.