Diane Janes 
Poisonous Lies: The Croydon Arsenic Mystery [EPUB ebook] 
Great Unsolved Murders of the 20th Century

In suburban Croydon over a period of ten months during 1928-9, three members of the same family died suddenly. A complex police investigation followed, but no charges were ever brought and the mystery remains officially unsolved. In the eighty years which followed, the finger of suspicion has been pointed at one member of the family after another: now, using the original police files and other contemporary documents, Diane Janes meticulously reconstructs these astonishing events and offers a new solution to an old murder mystery.