Agatha Christie 
Burden 

A superb novel of possessive love.Laura Franklin bitterly resented the arrival of her younger sister Shirley, an enchanting baby loved by all the family. But Laura’s emotions towards her sister changed dramatically one night, when she vowed to protect her with all her strength and love. While Shirley longs for freedom and romance, Laura has to learn that loving can never be a one-sided affair, and the burden of her love for her sister has a dramatic effect on both their lives. A story of consequences when love turns to obsession…Famous for her ingenious crime books and plays, Agatha Christie also wrote about crimes of the heart, six bittersweet and very personal novels, as compelling and memorable as the best of her work.