Tom Lockey should be on a beach holiday with his son, but thanks to his ex-wife he's spending it alone. Then Josh and his bike go missing, and whilst Tom frantically scours the Dorset coastline, the police suspect foul play - and Tom is their number one suspect. Meanwhile Rowena Jackson and her daughter, Amy, are in the neighbouring caravan. But little Amy isn't all she seems, and when she glimpses a crying boy with a mark on his face, is she dreaming, or is she seeing Josh?