The Johnson family appeared to have it all after two decades of happy marriage: professional success, a beautiful house in Kent, flaxen-haired children... Locals jokingly referred to them as a 'Sunday Supplement Family'. But one day Nick told his wife he had a surprise for her, led her blind-folded into the garden, and committed an act of violence far worse than anything they could have imagined. Henry, who was just 16 at the time, became a witness to the crime. We Need to Talk About Dad meets the Johnsons as they reunite for Christmas, fulfilling the dreams of the youngest son Felix who - until now - has been sheltered from the events of that day. Henry's need to confront what happened sees each of them come face to face with the mystery of the attack, and the impact it has had on their lives.