The mystery fretted me not a little.

"Are you ready for further work?" coolly asked Shadow, turning to me a minute later.

"Yes. Will we need as many men?"

"All but one. You can spare one to remain in charge here. Let the others march the prisoners to the station-house, and then follow me."

"Are we going to bag more game to-night?" inquired one of the men.

Shadow heard the question.

"Yes," he promptly returned. "There are plenty more to bag; but in bagging the next lot I'd advise you to keep your pops ready."

Our prisoners once safely in custody, Shadow led us by the shortest route toward the East River.

I guessed his destination this time.

"The old sugar-house?" I inquiringly said.