Miriam is a dedicated social worker who arranges for Kiri, a young black girl, to have an unsupervised visit with her birth grandfather, Tobi, and his second wife before her white foster family officially adopts her. However during the visit Kiri tragically goes missing and as the search for her intensifies Miriam is very publically blamed by the police, the press, and even her colleagues for putting the girl at risk.

Tobi searches for his son, Nate, the prime suspect in the case, and faces up to some uncomfortable truths about his relationship with him. The witch-hunt is intensifying around Miriam as she’s under pressure to admit she is to blame for what happened to Kiri, while Kiri’s foster family of Alice, Jim and Si also find themselves in the media spotlight.

Alice and Jim are shocked to hear from DI Mercer that the police case against Nate might not be straightforward after all and everything may not be as it seemed. A reeling Alice goes on the offensive, with Miriam in particular in the firing line. Meanwhile Tobi is furious with the police for the way they’ve treated his family, as DI Mercer has more bad news for him.