She struck Fleetwood a sharp blow with her riding crop as she spoke, and set off at speed down the road. Too much surprised to do more than call after her, Peggy drew rein, undecided what course to pursue. As she did so her eye was caught by a folded paper lying in the roadway. Now this had fallen from Harriet’s person as her horse started off unnoticed by either girl.

“That’s a letter!” exclaimed Peggy as she saw it. “Some one must have dropped it. Could it have been Harriet? I’ll get it and tease her anent the matter.”

Smiling roguishly she dismounted and picked up the missive. Somewhat to her amazement there was no address, and opening the epistle she found neither address nor signature.

“How monstrously queer!” she cried, turning it about. “Why, why,” as her glance rested almost unconsciously upon the writing, “what does it mean?” For with deepening amazement this is what she read:

“Your information opportune. An attempt will be made on the night of the twenty-fourth to surprise brigade at Elizabethtown, and to take the old rebel at L—— H——. Reward will be yours if successful. Can you be near at hand so as to be taken yourself?”

“The brigade at Elizabethtown is General Maxwell’s,” mused Peggy thoughtfully. “Then the old rebel must be Governor Livingston of Liberty Hall. The twenty-fourth? Why, ’tis to-day!” she cried in consternation. “Oh! what must I do? ’Tis past four of the clock now.”

She looked about dazedly as though seeking guidance. But with Peggy a need of decision usually brought quick result, and it was so in this instance. It was but a moment before her resolve was taken.

“I must just ride there and tell him, and then warn the garrison,” she said aloud. “’Tis the only thing to do.”

Mounting Star, she shook the reins and started. Before she had gone a dozen rods, however, here came Harriet riding back full tilt.

“Where are you going?” she called. “That is not the way to Bound Brook.”