Children are often the silent victims of marriage break-ups.
They have nothing to do with the causes yet the consequences for them can be severe.
What Maisie Knew looks at a crumbling relationship through a child's eyes. Maisie (the talented Onata Aprile) loves both her parents - ageing rocker Susanna (Julianne Moore) and art dealer Beale (Steve Coogan) - and chooses to tune out when the arguments begin.
When the split inevitably arrives, Maisie is caught in the custody roundabout, spending 10 days at each parent's apartment.
But Maisie seems more of a trophy than a loved one as both parents entrust her primary care with their new partners - Lincoln (Alexander Skarsgrd) and Margot (Joanna Vanderham).