Joanna is struggling with life as a new mum, and the flight to Melbourne is a huge additional strain on her. Baby son Noah cries the whole way, to the very apparent dismay of their fellow travellers. Exhausted and emotional from the journey, the couple finally arrive in Australia, where unforeseen events - and the white light of public scrutiny - change their lives forever.

The search for baby Noah leads to an arrest, but it soon becomes clear that not everything is as it seems.

The couple return to Scotland under constant media pressure.

A distressed Joanna and Alistair watch as the police search Elizabeth's house. Rattled by the investigation and Joanna's behaviour, Alistair tries to uncover what the police know.