Marble Heart Author:Gretta Mulrooney Londoner and retired professor Nina Rawle suffers from lupus, so she hires caregiver Joan Douglas to help her with her day-to-day activities, and the two women forge a mentor/protegee friendship. Meanwhile, in a series of letters to an old friend, Nina reveals the story of her younger days as a student protestor -- and terrorist -- in Belfast. T... more »he past inexorably returns to haunt Nina, and to threaten her new friend Joan's happiness.« less