Mystery at Saint-Hilaire = Castle of Fear — Priscilla Hagon

Gwenda, an eighteen-year-old English girl, who works in Paris, goes to Brittany for a vacation and she falls in love with handsome Sebastian. And when Gwenda comes to stay in a gloomy castle, she becomes involved in the mysterious events of her new home. What strange secrets are hidden in the crumbling old castle? Soon, she finds herself drawn into real danger! Is someone trying to kill her? An exciting story of mystery and romance!