In half a minute he was at the bank. And before that time, he had abandoned the nose-to-earth tracking. For now all around him was that terrible scent.

Back and forth dashed and circled and doubled Tam. And every evolution told him more of the gruesome story.

Here among the bushes had lain a strange animal; an unwashen and pungent and huge animal; apparently sleeping after a gorge of chicken or lamb. Here, along the path, had come the children, with Wisp behind them. Here the strange dog had leapt forth; and here,—alongside that string of forgotten and sun-blown fish on the ground,—Wisp and the stranger had clashed.

The dullest of scents could have told the story from that point:—the trampled earth, the spatters of dried blood, the indentation in the grass, where Wisp’s writhing body had striven so heroically to free itself from the crushing weight above it and to renew the hopeless battle.

Wisp was dead. He was slain by that huge and rank-scented creature. His body had touched the river-brink, fully five feet from the scene of the fight. After that it had disappeared. For running water will not hold a scent.

Yes, Wisp was dead. He had been murdered. He had been murdered,—this adored chum of his,—by the great beast whose scent was already graven so indelibly on Tam’s heartsick memory.

There, at the river-edge, a few minutes later, Trask Frayne found Tam-o’-Shanter; padding restlessly about, from spot to spot of the tragedy; whimpering under his breath. But the whimper carried no hint of pathos. Rather was it the expression of a wrath that lay too deep for mere growling.

At his master’s touch, the great collie started nervously; and shrunk away from the caress he had always craved. And his furtively swift motion, in eluding the loved hand, savoured far more of the wolf than of the trained house dog. The collie, in look and in action, had reverted to the wild.

Tam trotted, for the tenth time, to the spot at the river-shore, where the Black had bounded into the water. Impatiently,—always with that queer little throaty whimper,—he cast up and down along the bank, in quest of some place where Wisp’s slayer might perhaps have doubled back to land.

Presently, Trask called to him. For the first time in his blameless life, Tam hesitated before obeying. He was standing, hock-deep, in the swirling water; sniffing the air and peering through the dusk along the wooded banks on the far side of the stream.