Baroness Emmuska Orczy has 2 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is I Will Repay.

In 1792, during the French Revolution's Reign of Terror, an English aristocrat known to be an ineffectual fop is actually a master of disguises who, with a small band of dedicated friends, undertakes dangerous missions to save members of the French nobility from the guillotine.
Public Domain (P)2014 Phoenix Books

Another adventure with the dashing Sir Percy Blakeney. This time, his wits will be challenged once again; can he save his friend from the guillotine? Can he also save his friend's lover from herself? Treachery, jealousy, and romance all in one.
Public Domain (P)2020 Sandra Cullum