The Will-o'-the-Wisp is Baroness Orczy's last great tale, a story of love, danger, and fleeting illusions. Set against a richly atmospheric European backdrop, the novel follows a young heroine whose heart and fate become entangled with a mysterious figure known only as the "Will-o'-the-Wisp" — a man as elusive as the ghostly lights of legend. Pursued by betrayal and shadowed by political intrigue, she must decide whether to trust the enigmatic stranger who appears and vanishes like a dream, offering both salvation and peril. With its blend of romance, suspense, and haunting symbolism, The Will-o'-the-Wisp is a fitting farewell from the creator of the Scarlet Pimpernel, reminding readers that even in her final work, Baroness Orczy conjured magic, danger, and passion with unmatched skill.