Two for sorrow

"London, 1903. Two women are hanged in Holloway Prison for killing babies. More than thirty years later, their crimes resurface with shocking consequences. When Josephine Tey sets out to write a novel about Amelia Sach and Annie Walters, the notorious Finchley baby farmers, she can have little idea that the research for her book will be needed to help solve a modern-day killing - the sadistic murd...