A/N this popped in my head after reading LemonyTARDIS's fanfics and so I would like to thank them for my inspiration.

Jack and The Doctor were up to something. Katie just knew that. She stared up at her bedroom ceiling the TARDIS was not telling her. She had a toothache that she had been hiding for about a week and a half. She couldn't eat or sleep. She actually passed out from lack of both. Jack had found her passed out next to the library and had brought her to the med bay. But that was 2 days ago. She assured them she was fine. She covered herself with her blankets and began to cry at first from fear then from a mixture of pain and fear. She couldn't go to the dentist. No way no how. She had a very bad experience. She was deathly afraid. Jack and The Doctor knew she was afraid. But they didn't know how severely afraid she was. Katie got panic attacks when they even walked by a dentist office. But she always kept it hidden from them. Well at least until now.

Jack had heard Katie crying so he got The Doctor. The Doctor told Jack to stay with Katie while he got some painkillers for her and ask her what was wrong. They knew something was wrong, and at first they put up with it thinking it was a stomachache or a migraine as Katie would say, but they couldn't bear to see her in pain much longer.

"Katie you okay?" Jack asked from the other side of her bedroom door.

"Go aw-OWWWWW!" Katie said miserable. She could no longer stand it she passed out from the pain. She fell from the bed landing on the floor with a thump

The Doctor heard Katie from the med bay, he dropped the bottle of nonaspirin painkillers and ran to her room. The door was locked, Jack was trying to break it down. "I think she passed out." Jack said

"Move I'll sonic the lock." The Doctor said

The lock clicked and they burst in to a horrifying sight Katie was out cold on the floor and she wasn't breathing. Jack carried her to the med bay. He laid her down on the examination couch. The Doctor told Jack to administer mouth to mouth as he prepped oxygen.

After about 30 seconds she gasped for air. The Doctor slipped an oxygen mask over her face. After 20 minutes she no longer needed the oxygen. Jack and The Doctor were mad after Katie explained she had the toothache for a week and a half.

The Doctor angrily raced to the console and punched in the address of a dentist. The Time Lord wanted Katie to be ready before they left space, where they were currently drifting. Jack and The Doctor each held an arm as they dragged her to the console room, they sat her down and told her where they would be going.

All Katie could think was oh crud as the world began to fade.

Katie fell over.

"Oh come on the dentist is not that bad." Jack stated he rolled his eyes hands on his hips.

The Doctor shouted "Jack help me hold Katie still until we can get her to the med bay NOW!"

Jack stood in horror as he realized Katie was having a seizure. He ran forward placing his coat under her head. "Doctor what caused this to happen?" Jack asked worried for his friend.

"I don't know Jack, but we need to stop her from moving too much." The Doctor replied. He was also worried.

Finally Katie stopped shaking. Jack carried her fireman style to the med bay. Jack placed her on the examination couch. The Doctor got on his white coat. It helped him mentally to get into 'medical mode'

Katie began to look around dazed. Jack asked her if she knew who he was. Katie shook her head. Jack told The Doctor this and she immediately was rushed to a machine for an MRI. Then she was put in a bed in the med bay. After about twenty minutes Katie looked around. "Jack what am I doing here? What happened?" She asked with a confused look.

Jack had tears in his eyes he shouted for the doctor.

"Katie oh thank gallifrey you're okay." The Doctor said relieved that she was coherent (not longer out of it) "Don't do that you nearly made my hearts stop." The Doctor was glad his companion was awake."Katie what do you remember the last thing being said to you?" He asked he had a suspicion that he knew what the problem was, but he needed to confirm it.

"I don't really remember." Katie said

"Okay alright but as soon as you're better you still have to go." The Doctor said looking at her from the corner of one of his eyes.

"Go where?" Katie asked sitting up in the bed.

"The dentist." The Doctor said

Katie's eyes bulged out of her head as she was immediately sick all over the bed and then passed out slumping into Jack's arms.

Jack moved her to the exam couch.

The Doctor rushed back forward checking her heart rate. "Jack start chest compressions her heart stopped." He said while running around the med bay grabbing a defibrillator and the oxygen canister from before.

Jack began chest compressions.

The Doctor checked her heart still no pulse "CLEAR." He shouted while administering a shock

The Doctor checked her heart rate. "Jack get her back on an oxygen mask now!" He shouted while getting monitors and a pulse/Ox clip on her finger. Her heart rate was low but there.

After about an hour Katie regained consciousness.

The Doctor was next to her while Jack was getting some things ready in the med bay. If what The Doctor had no doubt about was true, then the med bay would need to be ready.

When Katie realized what had happened she began to cry. Then she began to cry from pain. The Doctor was stroking her arm saying she was okay and she was safe.

While Katie was unconscious the TARDIS had told The Doctor and Jack about her diary and that they needed to check it. The Doctor explained that he and Jack read about the nightmares she was having and that they knew why she was so deathly afraid.

Jack came back. He had a sorry look on his face. Her family was gone thanks to that lunatic alien. That alien that had scarred her for life. That alien decided to hide as a dentist. After a few days of torture Katie was rescued by an American group that handled aliens and they had contacted UNIT and UNIT contacted The Doctor. They didn't tell The Doctor but they gave him a file. To only open when the time is right. They had said. The TARDIS told them now was the time. When he and Jack had read what happened to Katie it made them sick.

Katie whimpered in pain. The Doctor and Jack gave her a hug. She soon fell asleep something she had not been able to do for days. Jack beckoned The Doctor to him.

"Doctor we cannot take her to a you-know-where she will hate us forever."

"Jack I know that but how will we help her if we can't take her you-know-where to get her tooth fixed."

They continued their conversation. Katie had heard what they were saying and she quietly left the med bay and tiptoed to her bedroom. She opened the door to hold her guinea pigs, the only members of her family that weren't gone.

After seeing she was no longer in the med bay. The Doctor and Jack carefully tiptoed to the her room on a hunch, to see Katie holding one of her guinea pigs. Facing the cage she said to the guinea pigs while holding one

"I can't do this. I just can't. All I can think of is that creature. I know I'm safe, but I just can't." She began to whimper in pain.

The Doctor looked at Jack. The Doctor nodded, Jack walked back to the med bay to finish getting things ready. Jack had never said but as a time agent he learned and knew how to do field and hospital medicine. The thing is that Jack also studied dentistry. He never thought he would have to use his knowledge about it. Jack changed into some red scrubs. He just waited in the med bay hoping Katie would trust him since he was a friend.

The Doctor knocked on Katie's open bedroom door mostly for her benefit.

She turned around and put her guinea pigs back and shut the cage. She walked to him he offered his hand for her to hold as they walked around the TARDIS to calm her down. The Doctor could tell she was terrified.

The Doctor knelt down to eye level. "Katie how would you feel if someone you and I both knew and trusted to fix your tooth?" He asked his Scottish accent shining through.

"That'd be okay." She said with a wince from the pain in her tooth.

"Okay, then can we go to the med bay so that we can get your tooth fixed?" The Doctor asked feeling proud of her for being so brave.

Katie nodded

"Well then Allons-y" The Doctor said with a slight grin

They walked to the med bay where Jack was waiting with some tools he gave a slight smile and told her she was awesome for being so brave. If he ever ran into that alien he would make them pay for what they did to Katie. Jack had her sit in the chair. He tilted the chair back. The Doctor gave Katie his hand to squeeze. The Doctor sat in a chair next to Katie. Katie looked at Jack who got a mirror and told her whenever she felt ready. She squeezed her eyes shut and opened her mouth.

Jack had to check all the other teeth which were in very good condition, except for one. It had a huge black spot. Katie also had all 4 wisdom teeth. Jack tapped Katie on her shoulder and told her she could close her mouth. Jack beckoned The Doctor over to the other side of the room. Jack explained that it was a cavity but a very very bad one and that Katie may need a root canal. Jack also explained that she needed her wisdom teeth out. After this The Doctor and Jack went back to the chair where Katie was staring off into space Jack tilted the chair back again. Jack got out a syringe with novocaine. Katie pretended she didn't see it. When Jack approached with the syringe Katie waited and then she bolted upright from the chair darting for the door she began to quickly crawl, so scared she couldn't move her legs. Jack sighed but was very proud of Katie for being able to last as long as she did without running well at least till now.

The Doctor jumped up from the chair that he was sitting in and grabbed her ankles pulling her back. She needed this done now or else she would be in even more pain.

Katie could feel herself being dragged back. She finally accepted her fate and gave up struggling. She relaxed.

Jack really didn't want to have to put Katie under until he was about to remove her wisdom teeth. Because the sedative wouldn't last super long. The Doctor put Katie back in the chair. She had tears streaming down her cheeks.

Jack couldn't stand it any more. His heart was throbbing looking at how scared she was. He went to the med bay storage and got out an IV bag with stand and anesthetic gas. He put a mask with the anesthetic over Katie's nose and mouth. Katie's eyes drooped shut. The Doctor then placed the IV into Katie's arm. Katie was also afraid of needles. Jack placed a dental gag to help him so he could work.

Jack got the wisdom teeth out no problem then it was time for the trouble maker. The Doctor checked Katie's oxygen rate they had incubated her through her nose because of the work that Jack was doing. Jack had nearly finished drilling the tooth when Katie began to stir. The Doctor quickly injected some more sedative into her. Jack filled the tooth and took x-Rays while he had the chance. She took good care of her teeth. No other problems. Jack removed the dental gag and The Doctor removed the IV and incubation tube. They moved Katie to a bed in the med bay and monitored her vitals. After about an hour Katie woke up she was thankful that Jack and The Doctor took care of her.

Now the next step was recovery

A/N so should I do another chapter called recovery or should I do a fic where The Doctor gets a toothache let me know thanks rate and review RC out.