Megan’s husbands Jonah (John Simm) and David (Anthony Wong), bewildered and haunted by what seem to be baffling questions – why did she have a secret hideaway and, more to the point, why did she have fake passports? – realise they need to join forces to work out what happened to her.
However, teaming up doesn’t do much to thaw their frosty relationship, and accusations start being bandied around.
Meanwhile, Sally (Emilia Fox) is still trying to process the horrific and unexpected turn her life has taken, and reluctantly meets up with a journalist, who uncovers a shocking link
Like the characters in this thriller, we have a feeling there will be a few more things to puzzle over before we get the answers we’re looking for.