Later, Barbara's flashbacks started to have a mysterious blonde Englishman coming to Paris who, for some reason, was very angry with Jason.

The mysterious blonde Englishman challenged Jason to a dual (with Jason getting the upper hand, at first).

The mysterious Englishman, about whom so many eerie tales were told!

They're the evil overreachers who, after being cleaned out by the mysterious Englishman at the baccarat table, leave the casino looking like jerks.

No one had seen these mysterious Englishmen; as for their leader, he was never spoken of, save with a superstitious shudder.

No doubt, the mysterious Englishman, endowed by popular superstition with supernatural powers, looked mightily ridiculous, lying there upon his face with table legs towering above him.

Since then the mysterious Englishman had been captured and was now lying a helpless prisoner in one of the topmost rooms of the Duchesse Anne.

The Scarlet Pimpernel--that is the name of the mysterious Englishman, is it not?

--my proposed dalliance with the mysterious Englishman.

A mysterious Englishman, no less.