The Hidden Children by Robert William Chambers Chapter 13 Page 27

Then I recalled the Black-Snake’s threat against Lois; and shuddered; then the astounding reason he had given for the Red Priest’s design upon us both set me dully wondering again.

Fear that his emissaries might penetrate our lines stirred me; and I remembered the moccasins she had received, and the messages sewed within them. If a red messenger had found her every year and had left at her door, unseen, a pair of moccasins, why might not an invisible assassin find her, too? Already, within our very encampment, she had received another pair of moccasins and a message entirely different from the customary one.

Whoever had brought it had come and gone unseen.

Distressed, perplexed, half sick with fear for her, I plodded on behind the Mohican,