"I was running all night," Klen told the Doctor and Ylsal, all three of them sat together at Ylsal's camp near the TARDIS. Ylsal had only grudgingly allowed Klen here; she still glared at him from time to time, but was thankfully silent. "When I heard your voices," Klen said, "I just homed in on you. Anything not to be alone here. I've no way to contact home...I don't even know if they've sent a rescue ship yet."

All through Klen's story the Doctor had listened quietly. Now he got to his feet and began pacing up and down. Suddenly he stopped and said "Ylsal, pack your things. We're leaving this planet." He did not look at them, just stared off into the distance and his own thoughts.

Ylsal started slightly at the order. "You really think we're all in danger?" she asked. "You and me aren't here to hurt the dinos."

"True, but I'm not prepared to risk your life by assuming they'll keep that in mind," the Doctor responded. "From what Klen here has told us, something -some new element - has fundamentally altered the dinosaurs here, and it's a fair bet it's also made them very angry. Angry beings have a tendency to lash out at just about anything. I'd feel a great deal more at ease if you were out of the way if, and when, that happens. And besides, we can't have Klen running round here loose, can we...far too dangerous."

OOOOOOOO

"Yes, it's bigger on the inside," the Doctor said as he opened the TARDIS doors and led his two companions down the short flight of steps into the shadowy, oak-panelled control room. "Two words: Dimensional transcendentalism. Practically kindergarten stuff where I come from."

"But it can take us back to Kovos, right?" Klen asked with a faint twinge of anxiety in his voice.

The Doctor was manipulating the controls on the table-like console as he replied "Don't worry that small head of yours, Klen, you'll be home safe and sound very shortly. You too, Ylsal."

"What happens when he get back?" Ylsal asked.

"'What happens'?" Klen parrotted. "Government sends in a strike force to nuke those lizards on Siluria before they kill anyone else, that's what! Stupid bloody question!" As he sat down and checked his gun, Ylsal glanced at the Doctor and saw him silently mouth 'pudding brain', causing her to grin despite the situation.

The journey from Siluria to Kovos was only a short hop, and the TARDIS landed in under a minute. What they found upon exiting the craft, however, was most certainly not comforting. They were in a city street, and people were stumbling around, collapsing and clutching their heads whilst crying out in pain. Some unaffected individuals were trying to help, but there were too few to do any real good.

Klen's face was pale with fright as he looked about him. "What's happening, what is this, what's going on, WHAT!" he was babbling hysterically.

"I don't quite know," the Doctor replied, "but I'd be very surprised if it isn't connected in some way to your super-powered dinosaur chums!"

"Doctor..." At the sound of Ylsal's strained voice, the Doctor turned to see her swaying unsteadily, then letting out a groan of agony and falling to her knees. A few seconds later she was screaming.

OOOOOOOO

It was yet another short hop to get Ylsal and Klen to a hospital. The Doctor watched as two nurses secured Ylsal, sweating and thrashing, on a bed. The mystery ailment had crippled over half the planet; emergency services were barely able to cope. There had already been a number of deaths reported. Reluctantly tearing himself from his new friend, the Doctor marched through the building to where the TARDIS stood just outside the main entrance, and muttered to himself "Whatever is doing this just went too far...It ends, or I end."