A normal Wednesday afternoon, and Judge Scott Sampson is preparing to pick up his six-year-old twins from school.

His wife Alison texts with a change of plan - she will be collecting them instead. But when Alison arrives home later she is alone, and denies any knowledge of the text.

Then the phone rings: a voice warns them that if they want to see their children again, Scott must do exactly what he is told in an upcoming court case, and, most importantly, they must 'say nothing' . ...