Braxiatel and Romana, by the way, get involved in a huge adventure which winds up with both of them being nearly killed.

But they manage to get out of it by doing something clever, which saves both their lives.

Romana retreats into hiding.

Braxiatel only manages to sneak back into the capital at the very end of the story, in order to find Jenny.

Back to Jenny and Seo.

It's soon clear that Weryn is just pretending he was subjected to the memory wipe. But he actually knows exactly what happened.

"I didn't know she was the Doctor's companion!" Weryn protests, when he's pressured to tell them everything. "Look, you can't tell him. Whatever you do, you can't tell him what we did!"

Seo figures out what he's talking about, after some confusion.

"When Jenny said that Father could change people back into segments," Seo mutters, "Dawn had total and complete faith in him. Jenny didn't have to force Dawn to become a segment — Dawn turned herself into one."

"And there's only one kind of human," Weryn agrees, "who'd walk into her own death, and still be completely confident the Doctor could get her out of it. A companion."

"You erased everyone's memories of Dawn, just to make sure Dad wouldn't find out about this!" Jenny realizes. "An elaborate and dangerous plan to make me look bad... and Dad foiled it just by existing!"

Seo and Jenny reveal the truth in court.

And use the Matrix as evidence against the individuals who carried out the plot against Dawn.

The schemers protest, insisting that since Seo can manipulate the Matrix, she fabricated the whole thing.

"Fine," says Seo. "If you're so sure you're innocent... I'll just drop it. Go back to my universe. And tell Father everything."

Now they're much more willing to bargain.

Seo drives a hard deal. She says she's willing to let this whole thing drop, but she wants certain things from the Time Lords before she does.

"First," says Seo, "Dawn died a hero, saving you all. I want to make sure you remember that."

"And if Dad asks us," Jenny puts in, "that's what we'll tell him, too."

They agree to lift the memory wipe.

"Second, and this is the most important," Seo says, "you give me back Dawn's kids. All of them."

This is a much bigger issue, and the Time Lords almost don't accept it.

But Seo reminds them that the only reason the Time Lords are still alive is because the Doctor crossed his own timeline — multiple times.

What if they told the Doctor what the Time Lords had become, and he decided to cross his own timeline one final time? And undo his saving them?

The Time Lords reluctantly give in.

The Epilogue

Jenny is preparing to leave Gallifrey.

Braxiatel enters, having snuck back into the capital.

"The Victor took Dawn out of time," Jenny says. "Killed her before she should have died. That means all those times Dawn saved the world... there won't be anyone around to do it, anymore." She finishes packing a suitcase. "Someone has to fix things. Keep history on track. Might as well be me."

"You're leaving," Braxiatel says.

"I appealed for the loan of a TARDIS and a way back to my universe," says Jenny. "They've agreed."

Braxiatel nods, slowly.

Then: "Are you planning to ever come back?"

Jenny can't answer this question.

It's clear that she's still very angry about what has happened.

"You mustn't blame yourself," Braxiatel says, "just because politicians acted irresponsibly to make you look bad. It's hardly your fault."

"No," says Jenny. "It's yours. Isn't it?"

Braxiatel hesitated.

"It wasn't hard to figure out, Braxiatel," says Jenny. "Rassilon told the Victor about the Key — that's obvious. But someone else gave the Victor the technology to scoop Dawn up and bring her here. And when the crisis was happening, everyone kept expecting my sister to show up and stop this. So I thought to myself... what Time Lord would have been that self-confident that he could summon my sister at the exact right time? Who could that possibly be?"

"I was never intending to kill Dawn Summers," Braxiatel replies. "That was never part of the plan."

"But you still didn't summon my sister, did you?" Jenny asks. "Why?"

"Perhaps some questions are left unanswered."

"Why?" Jenny demands.

"Because Weryn and his associates learned the plan," he said, "and used it against me."

He explains that he'd been intending to summon Seo to Gallifrey at the same moment as Dawn was plucked out of time. Seo would have arrived on Gallifrey and worked out what was going on, then rescued Dawn.

And, best of all, when Seo arrived to rescue Dawn, she'd also have discovered Braxiatel's trail of clues.

"A trail that leads right back to Rassilon," says Jenny. "Yes, I know that. But I still don't know why you wanted to kidnap Dawn in the first place!"

Braxiatel says nothing for a long time.

"Well," he says, at last, "I had to make your sister angry enough to do something drastic, now. Didn't I?"

Yeah, Braxiatel was trying to make Seo believe that Rassilon was killing Dawn.

So that Seo and Jenny would overthrow Rassilon.

"And when you found out you'd missed your chance," Jenny guesses, "and the Victor had scooped Dawn up too early — you figured the best solution would be to wait it out until Dawn was dead. Then summon Seo, afterwards, and use Dawn's death to fuel her rage and desire for vengeance — so she would take out your political opponents?"

"Rassilon is more than a mere political opponent," Braxiatel replies. "You've seen how dangerous he is. Someone must take him down."

"By why Seo?"

"Given her history… who better?"

Jenny turns back to her packing.

"I was doing it for Gallifrey," Braxiatel tells her. "You know I had to do it."

"But at what cost, Braxiatel?" Jenny insists. "I know you'd do anything to save this planet. But murdering an innocent, brave, noble spirit, like Dawn! One life, to save…"

"I told you, I never intended for Dawn to die," Braxiatel repeats.

Jenny freezes.

"Five lives were lost," Jenny realizes. "Dawn. Her husband. And... her children."

Braxiatel says nothing.

"Killing Dawn wasn't part of your plan," says Jenny. "But killing her husband and her children... that always was."

"I was planning to restore two of her children," Braxiatel replies. "I'm not heartless."

"But not the important one," says Jenny. She shakes her head. "I thought you were on the side of good and right. But you were willing to sacrifice a child, just to stop something his descendants would do!"

"I didn't make the decision lightly, Jenny," says Braxiatel. "I never make these decisions lightly."

Jenny turns back to face him. "Just because there was a chance that his distant descendent would wipe us out?!"

"Yes!" Braxiatel shouts back. "Always."

Jenny says nothing.

"We were very nearly wiped out, once before," Braxiatel says. "I watched the Daleks do it. I watched them nearly drive us all to extinction! A million years of civilization and culture, wiped out in an instant! I can't let it happen, again! I won't let it happen, again!"

Jenny stares at him.

"You don't trust yourself," she realizes. "You know there's this anger and fear inside you. You're afraid of it."

"It's inside all of us, Jenny," Braxiatel replies. "Ever since the War."

"That's why you wanted me in charge," says Jenny. "That's why you were willing to go to such great lengths to make my sister and I take over. It wasn't just to stop Rassilon. It was to stop you. To stop everyone."

"Yes."

Jenny isn't sure what to say to this.

Anything she could spit back at him, any retort she could come up with... would only make his point for him.

"We need you, Jenny," says Braxiatel. "You've seen what we could become, without you."

Jenny turns away, and picks up her bags. "I have to think about this."

She goes off to her new TARDIS, to leave.

"Jenny," says Braxiatel, before she does, "you know what I did was right. You know it was for the best."

She thinks about the moment when her sister first found out that the Time Lords had killed Dawn.

And, for a few seconds, Jenny had believed that Seo would tear apart the whole planet — killing both herself and every Time Lord there — just to stop them ever doing it again.

She thinks about Braxiatel and what he did.

She thinks about Weryn and the people he worked for, willing to nearly wipe out the planet, just to gain some political power and wipe out one child.

And the Victor — willing to end multiple universes, just to make sure the Time Lords were never threatened again.

"Yes," Jenny says, finally. "I do know." She unlocks the door to her new TARDIS. "That's how I know… I have to leave Gallifrey. I'm starting to think like a Time Lady."