London, 1930. The five greatest women crime writers have banded together to form a secret society with a single goal: to show they are no longer willing to be treated as second-class citizens by their male counterparts in the legendary Detection Club. Led by the formidable Dorothy L. Sayers, the group includes Agatha Christie, Ngaio Marsh, Margery Allingham and Baroness Emma Orczy. They call themselves the Queens of Crime. Their plan? Solve an actual murder, that of a young woman found strangled in a park in France who may have connections leading to the highest levels of the British establishment. As they embark on their own investigation, the Queens of Crime discover that they’re stronger together. But soon the killer targets Dorothy Sayers herself, threatening to expose a dark secret in her past that she would do anything to keep hidden.