In 2016, best selling children's author Helen Bailey went missing from her large detached Edwardian home 'Hartwell Lodge' in Royston, Hertfordshire. Her disappearance sparked a UK wide search to find her. Ian Stewart, Helen's partner at the time, told Helen's family and friends that Helen had left voluntarily after leaving him a note saying that she wanted some time alone and did not want to be contacted. However, the reality of the situation was far more sinister. This book charts the investigation carried out by Hertfordshire Police into Helen's disappearance and reveals the motive and evil actions of Helen's killer.