Before she can even begin to track down the killer of the old woman dumped by the lonely canal, Monika Paniatowski needs to find out who she is - and no one seems to know. Even when her daughter Louisa provides the vital clue, it only makes life more difficult, because the Chief Constable - intent on making Paniatowski's life difficult - refused to let her follow the obvious trail. And it is not until there is a second, even more brutal, murder, that Paniatowski realises she will have to call on the help of her old mentor, ex-DCI Charlie Woodend.