Set against a sweeping Cornish landscape, two couples discover that 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?

Cast:James Norton, Niamh Algar, James McArdle, Jessica Brown Findlay,

Genre:Drama,

country:United Kingdom,

Production:ITV, StudioCanal UK, Rabbit Track Pictures,