'If von Zarndirl is working for Iwaldi, then the two'll be taken up to the castle. I don't know what value Cobbs and Villiers have for Iwaldi. The fact that he didn't kill them when he caught them in his castle and that he wants them alive now - if von Zarndirl is working for him - shows that they've been holding out on us.'

'You should have used calibanite on Cobbs and Villiers,' Barney said.

'If I get my hands on them again, I will.'

The phone rang. Doc was across the room as if the ringing was a starter's pistol in the hundred yard dash. 'Doc,' Pauncho's bottom-of-the-barrel voice said. 'I just saw three men driving out of the courtyard with Cobbs and Barbara in the back seat!'

'Be right down!' Doc Caliban said. 'Meet us at our car! Bring food; we'll eat on the run!'

Pauncho was standing by the car with a big card-board box balanced on one huge hand. Doc lifted the hood of the Mercedes-Benz and looked for bombs. Then he slid under and inspected the bottom for explosives or signs of sabotage. Satisfied, he got out from under and into the driver's seat. Barney got into the back seat and Pauncho sat down beside Doc.

There was only one way out of Gramzdorf. Doc drove as swiftly as he could through the narrow streets, which were occupied by enough locals that he had to take it easy. He used his horn when they showed a reluctance to get out of the way. But Gramzdorf was small, and within five minutes they were on the asphalt road which wound up the mountain for many miles and then would begin a descent. Von Zarndirl's car was not in sight yet, even though it had only about five minute's headstart. Doc was driving over the narrow road as if he were on the Indianapolis Speedway. Pauncho ate with a nonchalance that irked Barney, who did not care at all for the depths whizzing by a few inches from him.

'Karlskopf is twenty miles away,' Doc said. "They can take a private plane from there.'

The sky was blue above them, and the spring sun would be above the mountain across the valley to their right within an hour. But to the west black clouds were advancing. Pauncho stopped stuffing his mouth long enough to turn on the car radio. A German announcer verified the threat of the clouds. A storm was blowing in from France.

Barney moved over to the left side where he did not have to see the abysses springing up at him every time they took a curve. He said, 'Pass some of that wiener-schnitzel or whatever it is back here.'

'Very good stuff,' Pauncho said. He lifted a bottle of dark beer from the box, tore off the cap with his thick teeth, and drank deeply. 'Ah! Nectar!' he burped.

Barney said, 'You're disgusting! What about it, Doc? You want Pauncho to feed you while you're driving?'

Doc shook his head. He did not want to be distracted by anything. Besides, he had just seen the car they were chasing, another Mercedes-Benz far ahead. It was on a higher level and just going around a corner of the mountain. It was moving suicidally fast, too.

The whole affair was puzzling. What group could be fighting the Nine? And why? Who were Cobbs and Villiers? Obviously, they were more than just archaeologists on a sabbatical.

Doc drove as if the car had become, in a mystical manner, a living thing that was also part of him. Even-Barney felt this emanation from Doc and relaxed, though he still did not move back to the right.

Then their auto screamed around a curve and there, some fifty yards ahead, blocking the road, was von Zarndirl's car.

'Hey, Doc!' Pauncho said. 'I saw Barbara going up the mountainside! Up in the woods there!'

Caliban could not spare-even a glance to look where Pauncho's finger was pointing. He was using the brakes to halt the Mercedes-Benz before the ambushers could fire at close range. He succeeded in stopping the vehicle, though not without some fish-tailing and then backed it up with a roar. The expected gunfire did not materialise. 'What's going on?' Barney said. Doc gestured with a thumb behind him. He had been looking in the rearview mirror. Barney and Pauncho turned their heads and saw two men coming out of the brush behind them about fifty yards away. One held a rifle; the other was looking down into a metal box he held before him.

Doc started the car forward with a surge that burned rubber and threw the others back against their seats. Brakes and tires screaming, he stopped the car with its nose almost touching the side of von Zarndirl's car. He threw open his door and fell out, was on his feet, and racing around to the other side of the car blocking their path. Von Zarndirl could be in the bushes just above waiting to catch them when they retreated from his aides, but he had to take that chance. He opened the right-hand door in the front and looked inside. The keys were still in the ignition lock.

Pauncho, looking in on the other side, said, 'Hey, Doc! Why don't we just drive this - ?'

A crack from up in the hills made him dive to the road. A bullet struck the pavement near him and screamed off. The report of the second shot came almost immediately after.

Doc leaped up, ran to the front of the car, lifted the hood, and then dived back to the pavement by the side of the car. The hood was perforated twice and the windshield once. But Doc was up and looking down over the side of the car at the motor. He rolled away as three more bullets went through the raised hood and through the windshield. Then, fluid bronze, he was back again, had reached in and yanked loose a wire and dived away again.

Pauncho and Barney were firing at the two men far down the road with their automatics. Seeing that the range was too far for accuracy and that the men were not even bothering to fire back, the two stopped shooting.

'What are you doing, Doc?' Pauncho called.

'I just disabled a bomb under the hood,' Caliban said. 'They expected us to drive their car out of the way; we'd have been blown to kingdom come!'

There was a trail up the mountainside. It was visible only in a few places, and in one of these Doc saw Villiers' red hair and Cobbs' black hair for a moment. His gaze kept going up the slope until it stopped on a whitish object. This could be the front of a house perhaps a thousand feet up.

Doc Caliban relayed this information to his men. 'They didn't pick this spot for an ambush just by accident,' he said. 'They've got a place up there!'

If that was true, then the group von Zarndirl represented had planned well ahead. The two men Caliban had questioned probably knew of this place. But they would have said nothing about it unless they had been asked about it. And since Doc did not know about it, he could not have asked about it. Doc swore to present future prisoners with some general questions which might turn up items like this.

'Look out!' Pauncho yelled.

Doc stuck his head up, risking another bullet from the sniper, to see what Pauncho was alarmed about. He did not hear the bullets, but he did hear the two reports coming from somewhere in that mass of evergreens above. And he saw the thirty or so ravens and hawks swooping down the mountainside toward them. They were so close together they almost formed a solid black ball, and they were only a few feet above the tips of the trees. They made no cries, and they bore little white objects on top of their heads.

All three men began firing, then stopped as a dip in the ground took the birds out of their view. The man with the rifle down the road began firing slowly, forcing Pauncho and Barney to get between the two cars and lie flat on the road. The sniper in the trees continued to shoot at Doc. And then the birds, wings beating, beaks open, were on them.

It was impossible to stay out of sight of the two riflemen and fight the birds at the same time. Barney and Pauncho tried; they rolled over on their backs and shot straight up into the feathery avalanche that hurtled on them. Doc hosed the eight ravens and three hawks that came at him with the .15 calibre bullets from his gasgun, and the lead birds exploded in blood, bone, and feathers. But five birds got to him, and he had to drop the gun and defend himself with his bare hands. All of them tried for his head, and in so doing they got in each other's way: wings beating against wings knocked them down, talons extended to sink into his flesh touched another bird and automatically sank and beaks snapping for eyes and nose closed on wings and legs and heads.