Robin Ballantyne is directing a 'missing persons' series for the Corporation; a haunting project that will attempt the reconstruction of vanished lives. But when Robin enquires about missing colleague Melanie Jacobs, she is advised by a shadowy superior to leave the case alone. Fearful for Melanie's safety, Robin discreetly unravels her last known movements and is forced to juggle the investigation with the demands of her three year old twins, her criminal father and the increasingly secretive DSI Finney. But Robin's questions are leading her into an unstable, conspiratorial world...