Hopes were high for this adaptation of Chimamanda Ngozi Adichie's acclaimed novel about the Biafran war, starring Bafta-winning Chiwetel Ejiofor as the feckless father of a flawed emergent nation. But the road to mediocrity is paved with good intentions and Biyi Bandele's awkward arrangement of domestic squalls, milling extras and antique newsreel footage never truly hangs together. Still, Ejiofor and Thandie Newton turn in dogged, heartfelt performances as the Nigerian academics at the mercy of history and mired in conflict. Their house must find space for both toxic mother-in-law and illegitimate child. Meanwhile, the Hausa tribes to the north are targeting the Igbo majority in the south. Undeterred, our unhappy couple plough on through the years, eventually taking their places for the bloodiest wedding ceremony since Game of Thrones. It's another trumpeting metaphor for the world on their doorstep.