Laura Boxford lives with her pug, Parker in the picturesque surroundings of the Wellworth Lawns retirement complex, formerly her family home. It is an arrangement that suits her well. No more blocked drains and rattling windows. The central heating always works and she can call for room service at any time. But then, one morning after breakfast her tranquility is disturbed. She discovers the body of her old friend Hetty Winterbottom in the room next door and by the look on her face, Hetty did not die of natural causes. As Laura recalls the strange behaviour of her friend the previous evening,...