In 2003, Molly Baker, a one-year-old baby girl, disappeared from the bedroom of her family's holiday apartment in Portugal.

Despite an unprecedented international effort on a scale never before seen in policing history, Molly, not even a trace of her, was ever found.

There remained no suspects, no evidence and no clues to her whereabouts for seventeen years. It was as though she had vanished into thin air.

Then, with one final throw of the dice, Molly's twin sister Sophie walks into the office of seasoned private investigator Dave Skipper and offers him a job. To take on the most famous missing person case the world has ever known.

What he uncovers; takes Skipper and his team on a wild-goose chase across Europe, grasping at ghosts and punching smoke, on the trail of a seemingly invisible, insidious abductor.

Eight million children go missing in the world each year. One per cent of them are never found.