They were almost abreast of him now. Astok was speaking.
«Bring a couple of your men along, Vas Kor,» he said. «We are short-handed upon the Thuria, so quickly did we depart.»
The panthan's fingers dropped from the dagger's hilt. His quick mind had grasped here a chance for succouring Thuvia of Ptarth. He might be chosen as one to accompany the assassins, and once he had learned where the captive lay he could dispatch Astok and Vas Kor as well as now. To kill them before he knew where Thuvia was hid was simply to leave her to death at the hands of others; for sooner or later Nutus would learn her whereabouts, and Nutus, Jeddak of Dusar, could not afford to let her live.
Turjun put himself in the path of Vas Kor that he might not be overlooked. The noble aroused the men sleeping upon the deck, but always before him the strange panthan whom he had recruited that same day found means for keeping himself to the fore.
Vas Kor turned to his lieutenant, giving instruction for the bringing of the Kalksus to Dusar, and the gathering up of the recruits; then he signed to two warriors who stood close behind the padwar.
«You two accompany us to the Thuria,» he said, «and put yourselves at the disposal of her dwar.»
It was dark upon the deck of the Kalksus, so Vas Kor had not a good look at the faces of the two he chose; but that was of no moment, for they were but common warriors to assist with the ordinary duties upon a flier, and to fight if need be.
One of the two was Kar Komak, the bowman. The other was not Carthoris.
The Heliumite was mad with disappointment. He snatched his dagger from his harness; but already Astok had left the deck of the Kalksus, and he knew that before he could overtake him, should he dispatch Vas Kor, he would be killed by the Dusarian warriors, who now were thick upon the deck. With either one of the two alive Thuvia was in as great danger as though both lived-it must be both!
As Vas Kor descended to the ground Carthoris boldly followed him, nor did any attempt to halt him, thinking, doubtless, that he was one of the party.
After him came Kar Komak and the Dusarian warrior who had been detailed to duty upon the Thuria. Carthoris walked close to the left side of the latter. Now they came to the dense shadow under the side of the Thuria. It was very dark there, so that they had to grope for the ladder.
Kar Komak preceded the Dusarian. The latter reached upward for the swinging rounds, and as he did so steel fingers closed upon his windpipe and a steel blade pierced the very centre of his heart.
Turjun, the panthan, was the last to clamber over the rail of the Thuria, drawing the rope ladder in after him.
A moment later the flier was rising rapidly, headed for the north.
At the rail Kar Komak turned to speak to the warrior who had been detailed to accompany him. His eyes went wide as they rested upon the face of the young man whom he had met beside the granite cliffs that guard mysterious Lothar. How had he come in place of the Dusarian?
A quick sign, and Kar Komak turned once more to find the Thuria's dwar that he might report himself for duty. Behind him followed the panthan.
Carthoris blessed the chance that had caused Vas Kor to choose the bowman of all others, for had it been another Dusarian there would have been questions to answer as to the whereabouts of the warrior who lay so quietly in the field beyond the residence of Hal Vas, Dwar of the Southern Road; and Carthoris had no answer to that question other than his sword point, which alone was scarce adequate to convince the entire crew of the Thuria.
The journey to Dusar seemed interminable to the impatient Carthoris, though as a matter of fact it was quickly accomplished. Some time before they reached their destination they met and spoke with another Dusarian war flier. From it they learned that a great battle was soon to be fought south-east of Dusar.
The combined navies of Dusar, Ptarth and Kaol had been intercepted in their advance toward Helium by the mighty Heliumitic navy-the most formidable upon Barsoom, not alone in numbers and armament, but in the training and courage of its officers and warriors, and the zitidaric proportions of many of its monster battleships.
Not for many a day had there been the promise of such a battle. Four jeddaks were in direct command of their own fleets-Kulan Tith of Kaol, Thuvan Dihn of Ptarth, and Nutus of Dusar upon one side; while upon the other was Tardos Mors, Jeddak of Helium. With the latter was John Carter, Warlord of Mars.
From the far north another force was moving south across the barrier cliffs-the new navy of Talu, Jeddak of Okar, coming in response to the call from the warlord. Upon the decks of the sullen ships of war black-bearded yellow men looked over eagerly toward the south. Gorgeous were they in their splendid cloaks of orluk and apt. Fierce, formidable fighters from the hothouse cities of the frozen north.
And from the distant south, from the sea of Omean and the cliffs of gold, from the temples of the therns and the garden of Issus, other thousands sailed into the north at the call of the great man they all had learned to respect, and, respecting, love. Pacing the flagship of this mighty fleet, second only to the navy of Helium, was the ebon Xodar, Jeddak of the First Born, his heart beating strong in anticipation of the coming moment when he should hurl his savage crews and the weight of his mighty ships upon the enemies of the warlord.
But would these allies reach the theatre of war in time to be of avail to Helium? Or, would Helium need them?
Carthoris, with the other members of the crew of the Thuria, heard the gossip and the rumours. None knew of the two fleets, the one from the south and the other from the north, that were coming to support the ships of Helium, and all of Dusar were convinced that nothing now could save the ancient power of Helium from being wiped for ever from the upper air of Barsoom.
Carthoris, too, loyal son of Helium that he was, felt that even his beloved navy might not be able to cope successfully with the combined forces of three great powers.
Now the Thuria touched the landing-stage above the palace of Astok. Hurriedly the prince and Vas Kor disembarked and entered the drop that would carry them to the lower levels of the palace.
Close beside it was another drop that was utilized by common warriors. Carthoris touched Kar Komak upon the arm.
«Come!» he whispered. «You are my only friend among a nation of enemies. Will you stand by me?»
«To the death,» replied Kar Komak.
The two approached the drop. A slave operated it.
«Where are your passes?» he asked.
Carthoris fumbled in his pocket pouch as though in search of them, at the same time entering the cage. Kar Komak followed him, closing the door. The slave did not start the cage downward. Every second counted. They must reach the lower level as soon as possible after Astok and Vas Kor if they would know whither the two went.
Carthoris turned suddenly upon the slave, hurling him to the opposite side of the cage.
«Bind and gag him, Kar Komak!» he cried.
Then he grasped the control lever, and as the cage shot downward at sickening speed, the bowman grappled with the slave. Carthoris could not leave the control to assist his companion, for should they touch the lowest level at the speed at which they were going, all would be dashed to instant death.
Below him he could now see the top of Astok's cage in the parallel shaft, and he reduced the speed of his to that of the other. The slave commenced to scream.
«Silence him!» cried Carthoris.
A moment later a limp form crumpled to the floor of the cage.
«He is silenced,» said Kar Komak.
Carthoris brought the cage to a sudden stop at one of the higher levels of the palace. Opening the door, he grasped the still form of the slave and pushed it out upon the floor. Then he banged the gate and resumed the downward drop.
Once more he sighted the top of the cage that held Astok and Vas Kor. An instant later it had stopped, and as he brought his car to a halt, he saw the two men disappear through one of the exits of the corridor beyond.