"Frost in the Sun" is a captivating historical novel by Claire Lorrimer that tells the story of Casilda Montero, the passionate daughter of a wealthy Spanish aristocrat. When Casilda is sent from her family hacienda in Southern Europe to an English boarding school, she develops a close friendship with the shy Joscelin Howard. Amidst the turbulent events of the 1930s in Europe, this friendship remains a stable anchor in her life. The novel unfolds against the backdrop of the glamorous life of London high society and the devastating battles in Spain, intertwining the fates of Casilda, Joscelin, and their families through passion and bloodshed. Lorrimer masterfully captures the emotional and historical dimensions of this era, immersing readers in the complex relationships and challenges faced by the protagonists.