Mary Rose MacKinnon — nicknamed MR or "Mister" — is a successful author who has opted to put aside her career in her 40s and devote herself to her young family. She lives in a comfortable urban neighbourhood with her partner, a busy theatre director, and their two children, trying valiantly and often hilariously to balance the demands of (mostly) solo parenting with the needs of her relentlessly spry but elderly parents. As a child, she suffered from an illness, long since cured and "filed separately" in her mind. But as domestic frustrations mount, she experiences a flare-up of forgotten symptoms which compel her to rethink her own childhood. Over the course of one outwardly ordinary week, Mister's world threatens to unravel, as the spectre of violence raises its head with dangerous implications for her and her children. Crafted with humour and unerring emotional accuracy, Adult Onset is a contemporary tale by turns searing and uplifting. (Knopf Random Vintage Canada)