A woman's body has been found on a local common. Evans and Craig are called in to investigate. They embark on what seems like a straightforward murder case, but is it? The dead woman worked in the local library, was quiet, likeable and hadn't a bad word for anyone; so why has she ended up dead? As the case progresses Evans begins to have doubts about his own ability as he and Craig confront a web of deceit. Nothing is as straightforward as it first appeared.