People aren't sure what to make of Susan Green. Family and colleagues find her prickly and hard to understand - but Susan makes perfect sense to herself. Age 45, she thinks her life is perfect. She has a London flat which is ideal for one; a steady job that suits her passion for logic; and a personal arrangement providing cultural and other, more intimate, benefits.
Yet suddenly faced with the loss of her mother and, implausibly, with the possibility of becoming a mother herself, Susan's greatest fear is being realised: she is losing control. And things can only get worse ... at least in Susan's eyes.