But the sentinel had caught a glimpse of the dusky figure, and he cried: "Who was he?
What is it ?" "A spy!" replied Robert hastily.

"A Frenchman whom I have seen in Canada! I think he sprang into those bushes and flowers!" The sentinel and Robert rushed into the shrubbery but nothing was there.

As they looked about in the dusk, Robert heard a refrain, distant, faint and taunting: "Hier sur le pont d'Avignon J'ai oui chanter la belle Lon, la." It was only for an instant, then it died like a summer echo, and he knew that St.Luc was gone.

An immense weight rolled from him.

He had done what he should have done, but the result that he feared had not followed.
"I can find nothing, sir," said the sentinel, who recognized in Robert one of superior rank.
"Nor I, but you saw the figure, did you not ?" "I did, sir.