Adapted from the best-selling novel by Martina Cole, Dangerous Lady is set in the gangland world of London in the 50's and 60's. It charts the rise to fame and notoriety of the Ryans, a poor Irish family, who become one of the foremost crime families in London, and is the story of the youngest daughter, Maura, who becomes the "dangerous lady" of the title. Maura is shielded from the criminal activities of her seven brothers. But after a failed love affair with a policeman, Terry, and, as her adored eldest brother, Michael, starts to lose his grip on the family, she is forced to take the destiny of the Ryans into her own hands, much to the concern of her mother, Sarah. No one thinks a twenty-year-old girl can take on the hard men of London's criminal underworld, but together, Maura and Michael are unbeatable: the King and Queen of organised crime. But Maura's most difficult challenge comes as she grows disillusioned by the cycle of bloody revenge around her and resolves to change both her life and that of her family.