In the dark heart of Revolutionary France, terror has found a new mistress — a beautiful and ruthless executioner known as Mam'zelle Guillotine. With Paris drenched in fear and the guillotine claiming victims daily, her name alone inspires dread. But into this chaos steps Sir Percy Blakeney, the enigmatic Scarlet Pimpernel, whose audacious missions and disguises have already humiliated the revolutionaries countless times. Now, facing one of his deadliest adversaries yet, Percy must navigate a deadly game of deception, romance, and survival. Will his daring wit and unshakable courage be enough to outmaneuver a woman as cunning as she is cruel? Filled with espionage, passion, and breathtaking suspense, Mam'zelle Guillotine is a thrilling climax to Baroness Orczy's legendary saga of the Scarlet Pimpernel.