Marie Corelli, born Mary Mackay (1855–1924), was a prolific British novelist during the late Victorian and Edwardian eras, known for her flamboyant writing and the polemical infusion of spiritual and fantastical themes in her work. Corelli's success in her time was remarkable; her books often outsold contemporaries such as Arthur Conan Doyle, H.G. Wells, and Rudyard Kipling. Her literary style is characterized by a blend of melodrama, romance, and the supernatural, making her works appealing to a broad audience seeking both excitement and moral upliftment. 'Thelma' is one of Corelli's notable works, a romantic novel set against the backdrop of the Norwegian fjords, which showcases her penchant for dramatic narratives and exotic locales. Corelli was a self-taught writer whose literature was both adored by the general populace and often derided by literary critics who deemed her style overwrought and her themes moralistically didactic. Despite such criticism, her influence was significant in popular literature; Corelli's novels played a part in shaping early twentieth-century attitudes towards spirituality and mysticism. While modern scholarship has largely overlooked Corelli's contributions, a re-evaluation of her work sheds light on the complexities of her narratives and the socio-cultural impact of her widely read, if ostentatious, storytelling.