In Marian Keyes's comedy, one woman's concussion leads to an outpouring of long-contained gripes and secrets, calling into question just how civilised and 'grown-up' any of us actually are. Meet Jessie, Cara and Nell. Married to brothers Johnny, Ed and Liam Casey. Three very different women tied to three very different men. Every family occasion is a party - until the day the secrets spill out. Playtime is over. But where are the grown-ups?