Hiro whimpered as he looked at the bloody mess on the table where a strange man with two hearts and a knife wound had been only moments ago.

"Where did he go?" He asked, looking around the table. "Oh, this is all my fault! I should have gotten him too! Before I teleported!"

"There was nothing you could do, Hiro." Mohinder snapped irritably.

Hiro whimpered again, and Ando sighed. There was silence for a minute as they all stared at the table.

"I have to find him." Hiro said suddenly.

"I'm not entirely sure that would be a good thing…" Mohinder warned.

"No! He was a hero! We can't let Sylar kill him!"

"Well, how do you suggest we find them?" Mohinder demanded.

There was silence.

"Molly." Ando suddenly volunteered.

Mohinder looked at him. "I'm sorry?"

"Molly could find them. I mean, she won't know what the… 'Stabbed Man' looks like, but she's seen Sylar before."

Hiro's face lit up like a kid's on Christmas. "Yes! Molly could find them!"

Mohinder chewed his lip thoughtfully. "It could work."

Hiro grinned widely.

"She's still with Matt, isn't she?" Ando asked, and Mohinder nodded.

Hiro placed a hand on Ando's shoulder, and, without another word, disappeared.

Hiro frowned as he looked out the window. He was a few hours off again. The sun had already set, for crying out loud!

Ando looked around. "Matt? Matt…?"

Matt came into the room with his gun out. "Hiro! Ando!" He put the gun down. "What are you doing here?"

Hiro smiled. "We need Molly's help!

"Molly? Oh, give the kid a break, will ya?"

Hiro's face fell. "But… but this is about Sylar…"

Matt froze. "Sylar? He's alive?"

Hiro nodded fiercely. "And he took someone. A man. With two hearts!"

Matt swallowed. "I'll… I'll be right back."

He turned into the other room. When he came back, a very groggy Molly was following him. She rubbed her eyes and looked at Hiro, smiling.

"Hi." She said weakly.

Matt knelt down, at eye level with the little girl. "Molly? We need you to do something for us." he took a deep breath, as though steadying himself, trying to tell this girl that he wanted to find the man from her nightmares. "We… We…"

Ando decided to take it out of his hands. "We need you to find Sylar."

The little girl paled considerably. "Sylar?" She squeaked. "He's alive?"

Hiro nodded sadly.

She swallowed, bracing herself, trying to answer. "O-Ok. I'll do it."

Matt smiled and kissed the top of her head. "That's my girl."

She smiled weakly back. "I'll need a map." She whispered.

Matt nodded and hurried off into the other room.

Molly sat down on the table as Matt returned with a map of the United States and a push pin.

She took the pin from him, closed her eyes, and concentrated.

Her eyes snapped open. A confused look passed her face. "This map isn't big enough." She said matter-of-factly.

Matt looked at her. "What do you mean?"

She turned to face him, her eyes wide. "He's not in the United States."

Matt nodded in understanding and left the room, returning with a map of the world.

Molly gently took it from him and unfolded it. The major cities were labeled, but nothing else.

She lifted the push pin again and closed her eyes. It hovered above the map for a moment before landing. She traced a small line, then pressed the pin directly on a dot on the map.

"London." Matt read. "He's in London."

Hiro grinned. "Then so are we!" he said triumphantly. He placed a hand on Ando's shoulder, ready to teleport.

But he never got any further than that. Because, at that moment, Matt Parkman screamed.

The Doctor gasped in pain; humans shouldn't have that kind of telepathic ability.

The world went dark around him for a second, then brightened instantly.

"Hello?" He called out.

A man suddenly appeared in front of him, whirling around in confusion. His eyes finally landed on the Doctor.

For a moment, they just stood there, unable to understand where they were or what the other was doing there.

"Erm… Hi. I'm The Doctor." The Doctor held out a hand.

The man looked at it as though it was diseased. "Matt." He said tentatively. "Matt Parkman."

The Doctor lowered his hand, not wanting to frighten the man.

"How… what?" Matt asked. "Who…?" he couldn't get his questions in order. "What happened?" He asked at last.

"I'm not entirely sure." The Doctor replied thoughtfully. "I was trying to make telepathic contact with a man named Peter Petrelli. It was already risky; I'm not exactly perfect with telepathy, but I had hoped…"

But Matt's eyes lit up. "Peter? You know Peter?"

"Well, I don't necessarily know him, but someone… told me about him. It's very important that I speak with him."

"Why?"

The Doctor smiled regretfully. "I'm afraid I don't have much time to explain that in detail. Let's just say a very dangerous man is about to get a very powerful weapon."

"A weapon? What kind of weapon?"

"It… It's best if I just talk to Peter."

Matt's face flashed with irritation. "Look. If you haven't noticed, Peter isn't here. I am. So you'd better start explaining."

The Doctor smiled ruefully. "You're right, of course. I'm sorry." He thought for a moment. "It's a weapon that could break apart the entire time/space continuum if not used properly. And I dread to think of what would happen if he got his hands on it…" He shuddered.

"And who is he?"

"Well, all I know is the name. Sylar."

Sylar whistled quietly to himself as he walked down the street. A smile broke out on his face as he saw what he'd spent an hour looking for.

A tall blue box.

He smiled. The TARDIS.

He walked up to it and stared at it for a moment. He held out a hand.

He grunted under the strain as the box slowly rose off the ground. It was a lot heavier than it looked.

He took off, leaving the ground, the TARDIS flying behind.

Matt's face was ashen. "Sylar?"

The Doctor nodded gravely. "You know him?"

"Who doesn't?" he breathed. "He's… well, dangerous." He bit his lip thoughtfully. "I'm not sure if you know anything about this, but I'll say it anyway. There are people out there, people with… abilities. Things that no one else can…" he trailed off as he saw The Doctor smiling knowingly.

"He told me." He informed the telepath.

Sylar set the blue box down carefully. It was already sunrise.

"My, my." He commented. "How time flies."

He walked over to the next room and knocked on the door. "Rise and shine, Doctor!"

No reply.

He rolled his eyes and opened the door, finding The Doctor unconscious on the floor. He smirked and left.

He returned with a large glass of water. "Don't make me do this." He told the Time Lord.

The Doctor didn't reply.

He smiled. "Then this is your own fault."

He dumped the contents of the glass onto the Doctor's face, who woke up, spluttering and leaping to his feet.

The Doctor disappeared suddenly, and Matt was left alone.

"Hello?" he called. "Doctor?"

Matt? The voice echoed around him, but it wasn't The Doctor's voice. Matt, please, wake up…

"Molly?" he asked.

The world turned dark.

He woke up slowly, finding Hiro, Ando, and Molly looking down at him. They smiled as he slowly sat up. "What happened?"

The Doctor shook his head, sending droplets of water everywhere. "There was no reason for that!" He snapped indignantly.

Sylar smirked. "I thought there was."

The Doctor continued to glare at him until Sylar spoke once more. "I found something that might interest you."

The Doctor's hearts sunk. There was only one thing he could think of that would cause that smile on this killer's face.

His worst fears were confirmed as Sylar led him into the other room. A tall blue box greeted him.

The Doctor felt genuinely sick. The only man on Earth that the Doctor was afraid of, perhaps the world's most dangerous serial killer, was now in possession of his TARDIS.

Sylar smiled as he placed a hand on the wood. "Can't get inside." He mused. "And I can get through almost anything if I try hard enough. This thing is impervious to telekinesis, radioactivity, everything imaginable."

Something sparked briefly in the Doctor's mind. "Are you telepathic?" He asked before he could stop himself.

Sylar whirled to face him, obviously confused. "Why?"

"Curious."

"Liar."

"It's the only answer you'll get."

Sylar remained silent.

The Doctor smiled. "Thank you. That's all I needed."

Sylar shot a murderous glare at him, but did nothing else. The Doctor grinned inwardly, sure that if his smile was as wide as he wanted it to be, he would be past the point of regeneration in two seconds. This Sylar seemed to have a foul temper, and when he got angry, people tended to die. Not that the Doctor would have particularly cared during normal circumstances, but Sylar did have Donna…

"So how do you get inside?" Sylar asked.

The Doctor swallowed nervously. "Well, you emptied out my pockets, and the key was inside…"

Sylar raised an eyebrow and walked into the other room, returning with a familiar silver key. He tossed it to the Doctor, who caught it.

"You're pockets were full of junk." Sylar noted.

"They're… bigger on the inside." The Doctor said simply, putting the key into the lock.

"Interesting."

The Doctor opened the door. He took a step inside, but Sylar gripped his shoulder, his hand like a vice.

"If you try anything," he warned, hissing his words into the Doctor's ear. "I will personally make sure that Donna dies slowly, understood?"

The Doctor smiled disarmingly. "'Course. You think I'd try something?"

Sylar glared at him, but allowed him to walk into the TARDIS. Sylar followed after a minute, his eyes widening as he saw the inside.

"That's…"

"Interesting?" The Doctor suggested.

Sylar nodded, an expression of pure shock on his face. "Bigger on the inside…"

The Doctor smiled to himself, then frowned as he remembered how dangerous this was. This man could wonder how the TARDIS worked and…

The Doctor turned considerably paler. He felt the color drain from his face, and one heart skipped a beat, setting it completely out of sync with the other. What if, just what if, this Sylar looked into the heart of the TARDIS?

He swallowed against the lump in his throat, trying to act as though nothing was wrong.

Sylar didn't seem to notice. His eyes were wide, darting about, trying to take everything in.

He took a deep breath, trying to keep calm. No, Sylar wouldn't know about the heart of the TARDIS. The Doctor would never tell him. He would lie, tell half-truths, erase his own memories or something, anything, just to make sure that he would never know.

Humans would burn if they saw the heart of the TARDIS. Rose had proven that. Time Lords would regenerate, or, in some cases, become so powerful that nothing could ever stop them.

But he had no idea what would happen to a hero, least of all one like Sylar. No doubt, he would go insane, but he would be more powerful than even the Doctor could imagine. Time itself would be on his side, helping this serial killer with anything he wanted…

The Doctor couldn't let that happen.

Sylar was walking around the TARDIS console, his hand gently brushing on the controls as he walked, an awed expression on his face. "This is impossible." He breathed.

"Not necessarily." The Doctor tried to sound indignant, but his words came out as though he was being strangled.

Sylar noticed this time. He turned to the Doctor. "Something wrong?"

"No, no, nothing." The Doctor mumbled quickly. Too quickly.

Sylar walked up next to the Time Lord, who was doing everything in his power not to make eye contact. His brain was firing off strategies, plans, anything, but for once it failed him. There was no solution he could think of that wouldn't put Donna in immediate danger.

"There's something you're not telling me." Sylar said confidently.

"What makes you think that?" The Doctor demanded, keeping his eyes on the controls and being careful not to tell a direct lie.

"Isn't there?"

The Doctor was stuck. If he said nothing, Sylar would know that there was. If he lied, Sylar would know. If he told the truth, well, Sylar would know.

"No." He mumbled.

"Liar." Sylar replied, sounding somewhat amused. "Didn't I tell you I know when you're not telling the truth?"

The Doctor remained silent.

"What is it?" Sylar asked.

"Like I'm going to tell you." The Doctor growled defiantly.

"With your precious Donna on the line? I think you will."

The Doctor was livid. "I'm warning you, if you hurt her…"

"I don't need to." Sylar's voice was quiet. "You'll do it for me."

The Doctor stumbled back. "You wouldn't."

"Wouldn't I?" Sylar asked, his voice lowering to a deadly whisper. "You haven't seen the things I'll do."

The Doctor's knees shook. There weren't many things that could scare him. Daleks and Cybermen were pretty much it. But this man, so close to being human, sent terror racing through his hearts.

He swallowed, unable to speak.

Sylar smirked. "I'll ask again, shall I? What are you trying to hide?"

The Doctor's mouth opened, then snapped shut. He was putting the universe on the line for Donna. For one human girl. Just one. Could he really condemn the world, condemn every living species for her sake?

Yes. A million times yes.