Detective Inspector Phil Brennan and criminal psychologist Marina Esposito have just returned from their honeymoon and are spending the Easter weekend in Suffolk with their baby daughter Josephina and Phil's adoptive parents. But their rural idyll is cruelly destroyed. After a devastating arson attack on the cottage, Josephina goes missing. With Phil in a coma, Marina is alone when she receives the first phone call. The kidnappers say that if Marina ever wants to see her daughter alive again, she has to do exactly what they say.