Fingerprints left on time. This is the premise on which wheelchair-bound Peter Marsh - a former policeman invalided out of the force - and his daughter Georgia base their investigations into unsolved past murders. A sense of "unfinished business". In this instance Marsh & Daughter are investigating a long-ago murder in the Kent village of Wickenham. In 1929 Davy Todd was charged with murdering Amy Proctor, middle-aged daughter of the local doctor. As the pair begin their investigations, a skeleton is found in a denehole in the woods of Wickenham Manor Hotel. Two seemingly unconnected events - yet Georgia and her father feel intuitively that there must be a link, and together, they set out to find it...