The Elusive Pimpernel(1969)

The Elusive Pimpernel is a historical adventure series set during the French Revolution. Sir Percy Blakeney, a seemingly frivolous English aristocrat, leads a secret double life as a daring rescuer spiriting French nobles away from the guillotine. When his brother-in-law faces execution, Percy must mount a dangerous rescue while navigating a deadly trap: the cunning villain Chauvelin has manipulated Percy's own wife into helping capture the mysterious Pimpernel, unaware that her husband is the very man she's been enlisted to betray. Caught between duty, love, and survival, Percy must outwit his enemies while keeping his true identity hidden from those closest to him.