The Tea Planter's Wife by Dinah Jefferies

Dinah Jefferies has created a heart twister of a tale.  Fascinating historical facts are revealed in the pathos of one woman's life as  a tea planter's wife.  She leaves England for a life in Ceylon where nothing is familiar and secrets have been kept with horrendous consequences to all.  The interpersonal relationships between Gwen, her husband Laurence, his sister Verity and former love interest Christine all bring to a boil hidden rages, jealousies and anguishes.  The past connects with the present in explosive, shocking revelations that will change everything.