Schoolteacher Rosy Winter is dying. But, beyond the homeopathic remedies, the dinner party obligations, the snatched whispers on wards and in staffrooms, a force - murderous, feminine, feverish - is stirring within her. A story of power and powerlessness, light and dark, life and death, 'Mrs Jekyll' embraces the paradoxes and paroxysms of modern womanhood, in a story every bit as gripping as the original.