Cora Bender killed a man. But why? What could have caused this quiet, lovable young mother to stab a stranger in the throat, again and again, until she was pulled off his body? For the local police it was an open and shut case. Cora confessed; there was no shortage of proof or witnesses. But Police Commissioner Rudolf Grovian refused to close the file and began his own maverick investigation. A slow unravelling of Cora's past, a harrowing descent into a woman's private hell.