When a missing child, Lucas Jones, reappears on his Uncle's doorstep in his hometown of Medford after an absence of 12 years, the brief moment of joy is clouded by mystery. Where has he been? Where is his father who disappeared at the same time? And how is it possible that Lucas is still 11 years old? As Lucas is uncommunicative, it is left to Detective Sergeant David King and child psychologist Jean Symonds to attempt to find some answers from the few belongings Lucas returned with; little more than four Polaroids and a personal journal which speaks of his time in a place called 'The Junction'.