A nameless victim. An unknown killer. An Impossible case for Monika Paniatowski. - Before she can even begin to track down the killer of the old woman dumped on the lonely canalside, Monika Paniatowski needs to find out who she is - and no one seems to know. It's 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.