A Dark Enchantment — Margaret Pemberton

Original title: The Guilty Secret.

A chilling secret exposed in the heat of the Portuguese sun Jenny Harland is a girl with a secret. One that has scarred her life, threatened her future happiness. At a luxurious cluster of villas in Northern Portugal, close friends and family gather together to help Jenny come to terms with her tragic past. But one man will stop at nothing to prevent them. No one is safe in the company of Jonathan Brown, the man whom Jenny now loves. Not even Jenny's cousin, Rozalinda, and her doting millionaire husband. Not her childhood friend, Mary Farrar. Not the stunningly handsome Miles Sullivan or great-aunt Harriet who watches over them all with increasing concern. No one is safe...