Detective Inspector Sean Connor and his team have a big problem. In the quiet, suburban borough of Richmond-On-Thames, a murder has been committed, and soon, other victims are falling fast. However, finding a suspect and a motive are proving to be somewhat elusive. Geographically, it doesn't seem to make any sense. Clues are few and far between, until by chance, they discover that all the victims are linked by way of their demise, and a perplexing character they call 'The Chocolate Woman' who they believe may also be involved. Their investigations lead them to suspect that these murders could also be connected to a murder, that happened thirty years ago. But their attempts to uncover the mystery, and reveal the killers name, are thwarted with each new lead. When D.I Connors' final piece of the jigsaw falls into place, his ultimate theory seems so unlikely, that it will either make - or break his professional career. Dare he risk everything and follow his instincts?