Jack struggled against his restraints as White Coat picked up the collar that the Master had discarded and walked towards Seska and Ashena, who were being held by some of his men.

"How delightful," White Coat said. "My property has been busy."

Seska spat insults in Gallifreyan at him; he may not have known who White Coat was, but he could tell he was a twisted soul.

White Coat smiled and grabbed hold of his chin. "You look very much like my property and you have its spirit...but not for long, hold him still."

He placed the collar round Seska's neck and stepped back and once again took out the control device.

"Don't you dare!" Jack yelled but was ignored as White Coat stepped back and took out the dreaded control box and twisted the dial savagely.

Seska fell to his knees with a scream of agony and remained there; his chest heaving as he tried to draw breath.

White Coat turned back to Ashena. "If you deceive me at any point, you will be minus a litter mate."

He then turned to Jack and the others. "You however are another matter."

"You're dead," Jack snarled.

White Coat raised an eyebrow. "Another threat, I'll add it to the list of your failed ones. I'm going to enjoy dissecting you, the man who cannot die...such potential profit. As for your compatriots, there's always a demand for salves."

He turned away then and focused on Ashena. "No more time wasting, move."

Ashena flinched and was pushed by one of White Coat's men and she stumbled towards the tunnel. Seska was hauled up and the whole party entered the tunnel.

The Master had to sprint to keep the Doctor in sight.

"Stop!" he called but to no avail. Without their bond he had no hope of stopping him; he could only chase him in the hope that he would tire.

He increased his speed again, closing the gap slightly and then his opportunity came when the Doctor stumbled.

With an extra surge of adrenalin he launched himself and caught the Doctor at waist level and brought him to the floor. If he expected the Doctor to submit, he was very wrong.

The Doctor let out a snarl and the Master found himself trying to avoid being bitten.

"Pajh istrai," he grunted as he managed to get a hold on the Doctor.

But the Doctor wasn't about to and the Master was forced to do something he didn't want to. He risked taking one hand away and found the spot he wanted and applied pressure.

The effects were instant and the Doctor went limp under him.

"Sorry...I had to," he said to the unconscious form, knowing that the Doctor would be in some discomfort when he came round.

Now all he had to do was find somewhere to rest in the warren of tunnels and caves; it was then that he realised he had no idea where they were.

He didn't recognise this section but they hadn't exactly had time to go spelunking. He spied an opening off to his right and he dragged the Doctor into it.

It opened into a large cave that glittered with crystals; not that he was interested.

He lay the Doctor down and sat back and let out a sigh of relief and finally had time to think.

Why had the Doctor reacted as he had? Surely he didn't see him as one of the monsters from his nightmare?

Yes, that nightmare; the same nightmare he'd been suffering since he'd woken from whatever he'd been in and the headaches. Were they causing the nightmares or were the nightmares causing the headaches?

After he'd retrieved his son, he would finish White Coat and the freak in one violent sweep. Then he would take the time to heal his husband and then they would blaze across the galaxies.

Rassilon he felt tired and he closed his eyes and was asleep in seconds and it seemed like seconds later he was startled awake by the feeling that his mind was on fire and the Doctor in the throes of another nightmare no not a nightmare, he was convulsing.

He could feel the heat from the fires that raged around him. He looked over at the blackened spot and his stomach lurched; all he wanted to do was curl up and die and a tear rolled down his cheek

The monster that caused them tightened its grip on the mental leash that crushed his freedom.

"Why the tears, I made sure they didn't suffer...well, not too much. You are better off without emotional attachments. You will eventually open the gateway and you will do it willingly...already your defences are failing and you will obey me."

He once again looked out at the scorched landscape and once more a tear escaped and then the pain began again and this time he didn't fight and he began to burn.

The Master whipped off his jacket and placed it under the Doctor's head to stop it hitting the rock floor and then he could do nothing until he stopped convulsing. It seemed like a lifetime but he eventually stopped.

He reached out to put him in the recovery position and drew his hands back in shock...he was hot again.

The Doctor let out an awful gurgling breath and if the Master could believe it his skin was starting to glow.

He had to move back because the heat was becoming uncomfortable and he screwed up his eyes as the light from the glow was intensified by the crystal formations in the cave.

He jumped when the Doctor let out a cry that made his mind flinch and the glow became a flare of white light and the Doctor was lost inside it. He covered his face with his arms until he could see the light fade and the heat lessen.

He lowered his arms and was surprised to find the Doctor on his feet but he saw something he'd only seen once before, back on the TARDIS...and it wasn't good.

He flinched when a set of glowing eyes focused on him.

"Si'arila?"

A searing pain in his head brought him to his knees.

"Do not call me that...I do not belong to you anymore. I serve another now...the gateway will be opened and you will serve my new master."

Pajh istrai- stop it

Si'arila- beloved