Keller sat in the quarters she shared with Rodney, who was gone. On her lap sat a tablet showing the molecular structure of the plague Katie Brown-Dex had. Katie despite all the antibiotics and medicines was getting worse by the minute. Keller had her in restraints so if she had a seizure she wouldn't hurt herself. Otherwise, Keller couldn't really do much so, she had left another medic in charge and left. For the past two hours, she had hid in her quarters and tried to figure out how to help Katie. Hitherto, she was pulling a blank. It was manufactured, she knew that but, by who was another question.

Keller ran another simulation. She had been doing them on how to eradicate the plague. Every single one came back negative. She thought about a new combination of drugs when Rodney came. He had his own tablet, which he was tapping on, no doubt running his own simulations. Keller looked up and smiled, "Rodney. Have a look at this. I've been working on a way to destroy whatever Katie has and I think you can help because you spend enough time there."

"Is that supposed to be an insult because I'm a Hypochondriac or is it an allusion to me being married to a doctor?"

Keller laughed at his seriousness. "Rodney, just give me a second opinion."

"What you said was rude and inconsiderate."

Keller rolled her eyes and got off the bed. When she stood a few feet away, she handed him the tablet, "I meant on the plague, not in general."

"Oh. Well you know," Rodney pointed down to the pad and looked quickly down at it. After he tapped the screen a few times, he said, "This plague, you said Katie had it?"

Keller nodded, "That's right."

Rodney widened his eyes. He hurriedly spoke, "Then she will either turn into a species I have never seen before or die. You have to find a way to cure her. I don't know if she can even survive the former if it does happen!"

Keller stuttered and said, "Are you sure? Maybe you read it wrong… Or maybe you are just over reacting… Rodney, if you're right Atlantis could be in trouble."

"Jennifer, I wouldn't read it wrong and I am serious. This could be very bad and I think it might be contagious. The structure is similar to every contagious disease I can think of."

Keller sucked in a breath, "We have to do something. Atlantis is about to go into battle and we need every healthy, not running around, changing into aliens. We have to do something!"

Rodney closed his eyes and stuck up a hand irritated, "Yeah, I know. Let me think. And if it is contagious, you probably just spread it through half the city. Radio Zelenka and tell him everything. If we change, he might be the only one left smart enough to cure us. Shaun is bright but he is off being a commando."

Keller nodded as Rodney went back to the tablet. She, not wanting to interrupt him, went close to the window overlooking the city on the opposite wall. She tapped her ear radio and did as she had been told.

Ronon stood looking at Katie Brown. She looked a shade grey to him but, what did he know? He wasn't a doctor. If she was getting worse, someone would tell him. For the time being, he was content she was alive. A medical person ran past and Ronon could hear him talking to the medic in charge about something. Ronon was pretty sure he heard the word "contagious" in the sentence. Hopefully it wasn't anything serious.

Abruptly, a sudden wave of ice crept down his spine, chilling him to the bone. Something wasn't right, he could feel it. Without thinking about it, Ronon gave a savage growl. Stepping away from Katie, he flipped over a medical cart filled with bottles and syringes. Pills spewed in every direction as caps came off. Ronon bared his teeth as he trudged towards the chief medic in the infirmary. The man raised his arms in self-defense and gave a small cry before Ronon brought down his arms on him. The medic instantly landed on his back. A dazed look spread over his face. Confused, he didn't react as Ronon brought back his arm to punch the small man.

A moment before Ronon could hit him, Ronon felt a prick on his shoulder blade as an infirmary staff member stabbed him with a sedative. Ronon furrowed his eyebrows and crumbled to the floor with a grunt. The staff member looked at the syringe in awe, "I guess Dr. Keller was right. It does actually take two times the normal dose to knock him out," as he said this he remembered the chief medic. Leaning beside the man he said, "Are you okay sir?"

"Get Dr. Keller."

The member nodded, "Right away sir."

Dr. Keller ran through the halls of Atlantis. She had just been contacted by a medic telling her about Ronon. Remembering something, she stopped. Her shoes skidded across the floor as her breathing slowed. Sighing, Keller turned and began running back to her room.

Stepping through the door, she spotted her tablet on the bed instantly. Snatching it in one arm, she jogged out into the hall again. When she stepped into the hall, she took up her run again to the infirmary.

When she got there, Ronon was on a medical bed next to Katie. He was strapped done with more restraints than was used for standard procedure. Then again, he could rip those to shreds. She stopped jogging and approached the medic who had radioed her, "What happened?"

"Well, Ronon growled and began destroying everything in his path except Katie. You told me earlier the plague thing could be contagious. I think it might have spread to Ronon. He had a seizure about five minutes ago, not unlike Katie's."

Keller nodded. She brought up her tablet and spun it so he could see. "Rodney and I think about a quarter of Atlantis is infected. The plague can kill people. We need to find a cure. Get everyone possible to work on this. If Atlantis falls, Earth will too."

The medic scurried away. Keller couldn't believe the plague was contagious. That meant she was next. Or at least would soon be contaminated. What would happen then? Frustrated, Keller jammed at her earpiece, "Zelenka, please respond."

A young female voice came over the radio. It had an odd accent that sounded like Czech to Keller. Without the girl saying her name, she knew it was Zelenka's daughter, Anna. She said, "Doc? Dad is out at the moment. Can I take a message? He went to get coffee and said he needed it before he could do anything else."

"Anna, I'm going to need you to get him into your quarters right away. I can't get near him. Where is your mother too? Has she been around anybody lately?"

Static came over the radio and Keller was frustrated instantly. After a long pause, Keller could hear shouting in the background. Zelenka said, "Dej mi to! Doctor Keller? I am in my quarters and I haven't seen Amelia since this morning. She said she was going to check up on Ronon and Katie. Why?"

Keller's eyes widened, "Radek, stay in your room! Don't leave or see anyone. Katie has a deadly plague and Rodney and I are infected. If we're affected, you could be the only one left to find a cure. You can access my data on the plague from your tablet."

Zelenka huffed, "All right, all right. Anna and I will do that. Can it be contained?"

Keller said, "No. We don't know who has been exposed. Plus the city can't detect it."

"Opravdu!"

"Radek, I need you and Anna to cure this. Earth could be at stake without the city."

With that Keller frowned and prepared to receive more of the infected.