Cressida is a woman who has everything. A fulfilling job, two adorable children and Harry, who is a wonderful husband and father. It sounds like the perfect life – but is it? Cressida is having a hopeless, passionate affair with Tom, a serial philanderer. Now she is pregnant. And it s not just Cressida – the whole world seems to be dangerously fertile. Tom s partner Nita announces that she, too, is expecting another baby. Then there s Cressida’s GP, Margaret, single and desperate for the child she thinks is her due, and Sophie, Harry s secretary, so baby-hungry that she is prepared to go to any lengths to conceive. In the well-ordered world to which Harry and Cressida feel they rightfully belong, things will never be the same again. But then, when babies are concerned, are they ever?