Martha and Sikron ran to the Doctor. He wasn't moving. She pressed her hands on his chest, his heart wasn't beating. She looked at him and smiled while Sikron looked worried.

'Doctor? Are you O.K.' said Martha, The Doctor's eyes shot open.

'Once again just peachy' Martha and Sikron untied him and he stood up.
'But that laser thing just hit you' said Martha.
'That thing was meant to torture, not to kill. Just a tickle really.' The Doctor ran off to the hole in the wall.
'Yeah sure.'

'Two hearts?' Sikron managed to mumble

'Blue skin?' she replied and ran off to find the Doctor.

Jolcrassa had run right over the platform on the other side of the hole and broke through the metal barrier. Sikron, Martha and the Doctor walked down the stairs to find Jolcrassa frantically splashing in some blue liquid inside a gigantic circular fishbowl.

'Please' he pleaded 'get me out of here.'

'Only if you tell us what you're doing.' said Martha.

'This is the liquid form of the unknownium isn't it? The stuff that all those people are trapped in back in the museum'

'Unknownium? Not very inventive really.' said Sikron

'Why didn't you tell us that it had a name before?'

'You never asked' said the Doctor sheepishly. Martha rolled her eyes and let Jolcrassa respond.

'Yes, it is.' said Jolcrassa, giving up his attempts to climb the slippery glass.

'And if you stay in there much longer, the unknownium will mess with you're metal side to put it in technical terms.'

'And when it gives up, you won't be able keep yourself afloat' Sikron put it 'so you'll die slowly, just as you deserve.'

'Sikron.' the Doctor said warningly.

'This thing took everyone from me, everything I knew he took it,' Sikron was yelling now and Jolcrassa was loving it, a sickly smile plastered on his face. 'He deserves to die in the most pain possible. We can't let him live. Wait a sec, you two are time travellers, Martha told me. Why can't we go back? We can go back before he did this and kill him.' Sikron's eyes blazed with the anger of the thousands of his race who will never be the same.'

'Sikron we can get them back but for now we have to listen to him.' he said firmly. 'So then, you mentioned something about reuniting with your brothers.'

'I have hundreds of these containers.' Jolcrassa said, looking defeated. 'In hundreds of these factories all over the planet. In a couple of minutes all of this unknownium will be shot into the sky and then it will rain down and freeze this planet.' Sikron wandered across the floor of the factory, trying to cool off, marvelling at the hundreds of identical containers. He found a control panel on the other side of the room and studied it carefully.

'The glass is breaking you said,' piped up Martha 'What does that mean?'

'The unknownium bomb,' explained Jolcrassa 'Was a time bomb. Our race, well I did at least, planned the attack along with the Daleks. We were allied against the Malcassairans and the humans. The Daleks had some sort of feud with the Malcassairans, something about tampering with Dalek machinery in the Time War.' His right arm was beginning was failing him as the unknownium seeped into his system. 'Instead of losing lives in battle, we decided to preserve them. After a couple of hundred years the glass will break and my glorious race will once again be free. They will be off their guard and we will kill them. I have arranged transport for every one of my soldiers to escape from this miserable planet forever. We will finish what the Daleks started.'

'That's not going to happen Jolcrassa.' said the Doctor, his face pressed to the glass of the container.

'Who are you to stop me?'

'No need. The Daleks tricked you. The glass will still break and the Perathoon will escape but all those hundreds of years of being trapped will come back to them at once. The glass is just a preserver, when they escape they will die. They tricked you Jolcrassa. They needed you but you they don't anymore. You have lived past your use.'

'How'd you get so powerful anyway?' interrupted Martha 'You run a museum, have easy access to rockets and technology, you must have a lot of money to afford all of this.' She gestured around the gigantic room, her voice and footsteps reverberating off the polished glass containers.

'What do you think, I kidnapped the Skretonans, all of them and when I was done there was an empty planet, billions of tons of gold there for the taking. I bought my way to the top, and killed as well.'

'Hold on, hold on, we've forgotten something.' Said Martha.

'What?' said the Doctor impatiently. He gets like that when his concentration is broken.

'Prinessa!' exclaimed Martha.

'Prinessa?' said Sikron and Jolcrassa at the same time.

'Oh yeah, her, why are people getting sucked into the unknownium in the museum.' Said the Doctor. Jolcrassa shook his head in confusion but Sikron knew.

'It's trying to save itself because it's alive. It thinks we are trying to destroy it because it's just getting older and weaker and so it's taking people-'

'As hostages.' said Jolcrassa, an malevolent smile creeping over his face, he sank slowly under the water, his voice still audible. The light from his left eye had gone out, his left side totally unresponsive.

'In a couple of minutes Doctor, the glass will break.' He made a mental checklist 'my people will escape, you will be dead, that's my favourite and then we will leave and freeze this STUPID planet before the authorities can catch up with us.'

'You're people will die!' yelled the Doctor 'The Daleks tricked you, that's what they do. Just one more question.' said the Doctor, mood changer completely. 'Why didn't you fight the war, why did you sneak and scheme behind everyone's back? Surely a big macho race like the Perathoon would think that war is glorious.'

'I was young and foolish Doctor, I could not face death, and the Daleks told me that there was a way out of it. Things have changed; I now do not fear death. You are wrong about the Daleks. Kill me, my people will still escape, I have programmed the Skretonans to take the Perathoon soldiers to their escape ships. KILL ME, DOCTOR, you will achieve nothing.'

'My pleasure.' whispered Sikron from the other side of the room. Sikron pressed a button on the console he had been studying for some time. In a split second, the unknownium froze and Jolcrassa was trapped. The Doctor turned to Sikron. At the last second, Jolcrassa had taken a gun from his belt and shot but the bullet was trapped.

'What was that for?'

'He is as good as dead now.' Said Sikron menacingly.

Martha was looking at Sikron, her eyes tearing up. Sikron faltered, his confidence lost.