Six months after the body of Josh Reynolds, a London nightclub owner, was found and determined by police and coroner to be a suicide, DCS James Langton tasks DCI Anna Langton to review the case. Reynolds died from a single gunshot wound to the head, the gun held in his right hand. But details are emerging that suggest someone else may have fired the gun... As soon as she wraps up the case, Langton tells Anna, she can join him at the FBI Academy in Virginia for training. Meanwhile, a Senior FBI Agent, Jessie Dewar, crime scene expert, is seconded to Anna's team as part of her research and immediately the competence of the original investigation team is questioned...