Tritonia

"Sylvia, daughter of the Duke of Belham, is bored with the various young men she meets at Lady Lamborne's masked ball. At last she escapes their attentions and makes her way into the cool, moonlit garden, where she encounters a masked stranger.
The following morning, Sylvia's father reveals that he has amassed such debts from his gambling that the family can no longer maintain their high profile London life. They must return to Castle Belham and Sylvia realises that she will never see her mystery stranger again.
At Castle Belham, Count Von Brauer enters their lives. In time, the Duke loses a vast sum of money to him at a gathering. The Count offers to overlook the debt in return for Sylvia's hand in marriage. At first, Sylvia refuses, but when the Duke suffers a nervous collapse, her resistence crumbles.
Only a stranger from the past can rescue her from her nightmare... only the stars in the sky can point the way.
If you enjoy Downton Abbey you will love Barbara Cartland."

Barbara Cartland was the world’s most prolific novelist who wrote an amazing 723 books in her lifetime, of which no less than 644 were romantic novels with worldwide sales of over 1 billion copies and her books were translated into 36 different languages. As well as romantic novels, she wrote historical biographies, 6 autobiographies, theatrical plays and books of advice on life, love, vitamins and cookery. She wrote her first book at the age of 21 and it was called Jigsaw. It became an immediate bestseller and sold 100,000 copies in hardback in England and all over Europe in translation. Between the ages of 77 and 97 she increased her output and wrote an incredible 400 romances as the demand for her romances was so strong all over the world. She wrote her last book at the age of 97 and it was entitled perhaps prophetically The Way to Heaven. Her books have always been immensely popular in the United States where in 1976 her current books were at numbers 1 & 2 in the B. Dalton bestsellers list, a feat never achieved before or since by any author. Barbara Cartland became a legend in her own lifetime and will be best remembered for her wonderful romantic novels so loved by her millions of readers throughout the world, who have always collected her books to read again and again, especially when they feel miserable or depressed. Her books will always be treasured for their moral message, her pure and innocent heroines, her handsome and dashing heroes, her blissful happy endings and above all for her belief that the power of love is more important than anything else in everyone’s life.