"Aye! The dog that was yours and is mine," jeered the sentry. "So he nosed you out, did he? Knows his duty—good dog, Tumbu! Knows his master now! Knows who saved him from starvation when he was lurking about in the gutter. Eh! you brute!"
He lunged a kick at Tumbu, who retreated a step, looking from the new to the old master, feeling, in truth, a trifle confused. For the Afghan sentry had certainly found him homeless, friendless, and the dog had stuck by him, feeling that here at least was something vaguely connected with the past life. But now he stood doubtful, expectant, his little ears pricked, his small eyes watchful.
"Well," continued the sentry with a half-drunken laugh, "dog or no dog, you've no business here, so come along with me, my King."
He reached out a heavy hand, and Roy shrunk from it. As he did so there came a sound which sent the blood to Roy's heart with a spasm of instant hope, of possible escape. It was Tumbu's low growl as he realised that some one wanted to touch his old master and that his old master did not want to be touched.
"At him, Tumbu! At him, good dog!" The words came to Roy in a flash, and like a flash the great, powerful dog leaped forward, his fur a-bristle, his white teeth gleaming, and the next instant, taken by the suddenness of the attack, the sentry lay on his back half stunned by the fall, while Tumbu, on the top of him, checked even a cry by a clutch at his throat. A soft clutch so far; but one that would tear through flesh if needful.
Roy was on his knees beside the fallen man.
"Hist! not a sound or the dog shall kill you. He can. Give me the keys. I want to get out of the gate! The keys, do you hear?"
The sentry tried to struggle, but warned by the weight of the dog on his breast and those sharp teeth ready to close upon his throat, murmured hoarsely, "It is only barred, but the bolts are difficult. If you will let me get up and call off your dog——"
But Roy took no heed of his words. "Keep him there, Tumbu," he whispered as he ran to the gate.
Bolted and barred it was, and in the darkness of the archway it was hard to see, for the lantern had gone out in the scuffle. But there was no time to lose, for already beyond the archway it showed faintly light. One bar down! The sentry made a faint effort to stir, that was answered by an ominous growl from Tumbu.