Set against a sweeping Cornish landscape, two couples discover their toddlers were switched at birth in a hospital mix-up, and face a horrifying dilemma: do they keep the sons they have raised and loved, or reclaim their biological child?
EPISODE 1
Episode 1
Pete and Maddie find out that their son Theo was swapped at birth with another boy - will Theo's real parents want him back, or will the couples be able to 'play nice'?
EPISODE 2
Episode 2
Pete and Maddie begin the fight to keep Theo, but it's an expensive and painful process and the constant dredging up of their past starts to damage their relationship.
EPISODE 3
Episode 3
Pete is questioned by police. Miles leaks the story to the press, costing Pete his job. His life unravelling, Pete realises to save his family, he must dig into Miles' murky past.
EPISODE 4
Episode 4
The final court hearing looms and the boys' fate will be decided. Miles' twisted lies might get exposed for what they are, or maybe Pete and Maddie will lose everything.
James Norton
Jessica Brown Findlay
James McArdle
Niamh Algar
Kate Hewitt
Kitty Kaletsky
Kate Crowe
Joe Naftalin
Grace Ofori-Attah
JP Delaney