'Alternate worlds then, maybe.' Ross's imagination caught up that idea. 'Two worlds from a change point in history,' he elaborated, noting her look of puzzlement. 'One stemming from one decision, another from the alternate.'
'I've heard of that! But, Gordon, if you could return to the time of decision here and you had it in your power to say, 'Yes—live!' or 'No—die!' to the alien natives, what would you do?'
'I don't know. But neither do I think I shall ever be placed in that position. Why do you ask?'
She was twisting her still damp hair into a pony tail and tying it so with a cord. 'Because ... because I feel.... No, I can not really put it into words, Gordon. It is that feeling one has on the eve of some important event— anticipation, fear, excitement. You'll let me go with you tonight, please! I want to see it—not the Hawaika that is, but that other world with another name, the one they saw and knew!'
An instant protest was hot in Ross's throat, but he had no time to voice it. For Ashe was already nodding.
'All right. But we may have no luck at all. Fishing in time is a chancy thing, so don't be disappointed if we don't turn you up that other world. Now, I'm going to pamper these old bones for an hour or two. Amuse yourselves, children.' He lay back and closed his eyes.
The past two days had wiped half the shadows from his lean, tanned face. He had dropped two years, three, Ross thought thankfully. Let them be lucky tonight, and Ashe's cure could be nearly complete.
'What do you think happened here?' Karara had moved so that her back was now to the wash of waves, her face more in the shadow.
'How do I know? Could be any of ten different things.'
'And will I please shut up and leave you alone?' she countered swiftly. 'Do you wish to savor the excitement then, explore a world upon world, or am I saying it right? We have Hawaika One which is a new world for us; now there is Hawaika Two which is removed in time, not distance. And to explore that—'
'We won't be exploring it really,' Ross protested.
'Why? Did your agents not spend days, weeks, even months of time in the past on Terra? What is to prevent your doing the same here?'
'Training. We have no way of learning the drill.'
'What do you mean?'
'Well, it wasn't as easy as you seem to think it was back on Terra,' he began scornfully. 'We didn't just stroll through one of those gates and set up business, say, in Nero's Rome or Montezuma's Mexico. An Agent was physically and psychologically fitted to the era he was to explore. Then he trained, and how he trained!' Ross remembered the weary hours spent learning how to use a bronze sword, the technique of Beaker trading, the hypnotic instruction in a language which was already dead centuries before his own country existed. 'You learned the language, the customs, everything you could about your time and your cover. You were letter perfect before you took even a trial run!'
'And here you would have no guides,' Karara said, nodding. 'Yes, I can see the difficulty. Then you will just use the peep-probe?'
'Probably. Oh, maybe later on we can scout through a gate. We have the material to set one up. But it would be a strictly limited project, allowing no chance of being caught. Maybe the big brains back home can take peep-data and work out some basis of infiltration for us from it.'
'But that would take years!'
'I suppose so. Only you begin to swim in the shallows, don't you—not by jumping off a cliff!'
She laughed. 'True enough! However, even a look into the past might solve part of the big mystery.'
Ross grunted and stretched out to follow Ashe's example. But behind his closed eyes his brain was busy, and he did not cultivate the patience he needed. Peep-probes were all right, but Karara had a point. You wanted more than a small window into a mystery, you wanted a part in solving it.
The setting of the sun deepened rose to red, made a dripping wine-hued banner of most of the sky, so that under it they moved in a crimson sea, looked back at an island where shadows were embers instead of ashes. Three humans, two dolphins, and a machine mounted on a reef which might not even have existed in the time they sought. Ashe made his final adjustments, and then his finger pressed a button and they watched the vista- plate no larger than the palms of two hands.
Nothing, a dull gray nothing! Something must have gone wrong with their assembly work. Ross touched Ashe's shoulder. But now there were shadows gathering on the plate, thickening, to sharpen into a distinct picture.
It was still the sunset hour they watched. But somehow the colors were paler, less red and sullen than the ones about them in the here and now. And they were not seeing the isle toward which the probe had been aimed; they were looking at a rugged coastline where cliffs lifted well above the beach-strand. While on those cliffs—! Ross had not realized Karara had reached out to grasp his arm until her nails bit into his flesh. And even then he was hardly aware of the pain. Because there was a building on the cliff!
Massive walls of native rock reared in outward defenses, culminating in towers. And from the high point of one tower the pointed tail of a banner cracked in the wind. There was a headland of rock reaching out, not toward them but to the north, and rounding that....
'War canoe!' Karara exclaimed, but Ross had another identification:
'Longboat!'
In reality, the vessel was neither one nor the other, not the double canoe of the Pacific which had transported warriors on raid from one island to another, or the shield-hung warship of the Vikings. But the Terrans were right in its purpose: That rakish, sharp-prowed ship had been fashioned for swift passage of the seas, for maneuverability as a weapon.
Behind the first nosed another and a third. Their sails were dyed by the sun, but there were devices painted on them, and the lines of those designs glittered as if they had been drawn with a metallic fluid.
'The castle!' Ashe's cry pulled their attention back to land.
There was movement along those walls. Then came a flash, a splash in the water close enough to the lead ship to wet her deck with spray.
'They're fighting!' Karara shouldered against Ross for a better look.
The ships were altering course, swinging away from land, out to sea.
'Moving too fast for sails alone, and I don't see any oars.' Ross was puzzled. 'How do you suppose....'
The bombardment from the castle continued but did not score any hits. Already the ships were out of range, the lead vessel off the screen of the peep as well. Then there was just the castle in the sunset. Ashe straightened up.
'Rocks!' he repeated wonderingly. 'They were throwing rocks!'
'But those ships, they must have had engines. They weren't just depending on sails when they retreated.' Ross added his own cause for bewilderment.
Karara looked from one to the other. 'There is something here you do not understand. What is wrong?'
'Catapults, yes,' Ashe said with a nod. 'Those would fit periods corresponding from the Roman Empire into the Middle Ages. But you're right, Ross, those ships had power of some kind to take them offshore that quickly.'
'A technically advanced race coming up against a more backward one?' hazarded the younger man.
'Could be. Let's go forward some.' The incoming tide was washing well up on the reef. Ashe had to don his mask as he plunged head and shoulders under water to make the necessary adjustment.
Once more he pressed the button. And Ross's gasp was echoed by one from the girl. The cliff again, but there was no castle dominating it, only a ruin, hardly more than rubble. Now, above the sites of the saucer depressions great pylons of silvery metal, warmed into fire brilliance by the sunset, raked into the sky like gaunt, skeleton fingers. There were no ships, no signs of any life. Even the vegetation which had showed on shore had vanished. There was an atmosphere of stark abandonment and death which struck the Terrans forcibly.
Those pylons, Ross studied them. Something familiar in their construction teased his memory. That refuel planet where the derelict ship had set down twice, on the voyage out and on their return. That had been a world of metal structures, and he believed he could trace a kinship between his memory of those and these pylons. Surely they had no connection with the earlier castle on the cliff.
Once more Ashe ducked to reset the probe. And in the fast-fading light they watched a third and last
