They carefully walked into the room, which had been left dark and cluttered. Clearly the previous occupants have frantically tried to rid the room of any clues. The Doctor scanned the walls and ceiling for some kind of a light, but what he found would not turn on.

"Has anyone got a torch?" he looked at the cat nuns, but they had nothing. He tinkered with the light using his sonic screwdriver, and eventually it lit. "Ah ha! Don't you trust me now?" He smiled at Meowrita, but she looked back at him with disgust.

Together, the three of them began searching the room for clues, anything that might tell them more about who or what they were facing. However, they quickly found that this was a difficult endeavor.

"Look at this," called Meowline, showing the doctor a document written in some mysterious language. "What could this be? Might it be important?"

The Doctor took the paper from her and examined it. He recognized the language, but he couldn't quite place where from. He could certainly read it, though. "It's a bunch of orders, it seems... from their home base. This looks like some of their plans for the 'harvest'... It dosen't mention their home planet... hmmmm... Anyway, we only have a couple of pages here from the document. It looks like there used to be a lot more. See if you can't find anything else, eh?"

They all began searching the room again. The Doctor noticed a strange odor, but he couldn't quite place what it was. It made him feel slightly dizzy. He saw what looked like a radio receiver, and he bent to pick it up, then next to it he saw something else. It was a photograph. It was a photo of someone he knew... he fumbled to pick it up, but his arms felt heavy, his whole body felt heavy. Then he blacked out.

* * * * * * * * * * * * * * * *
"Doctor! Doctor!" The Doctor awoke outside the building with Meowline slapping his face.

"Wh-what happened?" he stammered. He tried to lift himself from the ground, but he felt very weak. He was embarrassed and felt like this whole situation was getting swiftly away from his control.

"There was something strange in the air inside that room, Doctor!" Meowline was frantic. "It didn't effect Meowrita or me, but you suddenly just fell over, so we dragged you out here... It looks like you've improved."

"I've got to go back in there," said the Doctor decidedly. "There was clearly more evidence than we found. We've got to find out all we can about these creatures... where they're from and how they are seducing people..." He didn't mention the photograph.

Meowrita stepped in, "I'm sorry, Doctor, but we simply can't risk it. Whatever made you black out in there could be much more dangerous to you in the future."

The Doctor was furious. He not only had to search the room for more evidence, but he had to get that photograph and figure out why in the universe those creatures had that photo.

"Look, sisters, I understand your concern, but I feel like we are right on the edge of figuring this thing out. We got part of that document, but I just don't think that will be enough. For some reason, I know I have heard about this species before, but I just can't quite place where from. It's like there's a wall in my mind, a fog blocking that memory... We've got to go back in there." But the Doctor didn't feel so sure. He knew that if he could just remember where he knew this species from, this whole task would get a lot easier, but for some reason he couldn't recall. This whole thing was filled with the what reeked of mind control, and that disturbed him. He didn't want anyone tinkering about inside his head.

The sisters looked at each other, wondering what they should do.

"Wait, I have something back at the Tardis that might do the trick!" The Doctor suddenly realized and he began to dash off in the direction of the familiar police box. The sisters were puzzled but they had followed him so much already it seemed like they shouldn't stop doing so now.

They arrived presently at the Tardis and the doctor opened the door and dashed inside. Meowline moved to follow him but Meowrita grabbed her robes. "It might be a trap!" she said.

"Oh, come on now! Surely The Doctor has proven himself to you by now!" Meowline protested, but before Meowrita could respond The Doctor had come out of the Tardis holding something and looking quite proud of himself.

"See, it's a mask." He said, holding the strange contraption up for the nuns to see. "I got it ages ago! I'm just glad I was able to find it so quickly! I..." He paused. He was hit with the impact of a memory. Of course he had found it quickly. It wasn't that long ago that...that she had been looking through the closet and pulled it out, laughing and asking him what it was for. She had thought it looked quite silly indeed. The Doctor stood with his mouth agape and his eyes quickly wettening.

"Are you alright, Doctor?" Meowline rushed up to him, very concerned. "Are you going to black out again? Oh dear!"

It took a moment but the Doctor had managed to suppress the emotions. He took a sharp breath in through his nose and his face quickly hardened again. "No, I mean, you see, this mask here! It should help me to avoid breathing in whatever mind control pheromones are in that room! It might not last long before they start to seep into me in some other way but it should buy us some precious minutes to continue our search!"

The sisters looked at him, a bit confused.

"Well, come on, then!" the doctor said and began rushing back to the room. He only hoped the mask would buy him enough time to
recover the precious photo.

They arrived back at the door in no time and the doctor fitted the strange mask to his face. He could see Meowline smile without being able to help herself. It was a silly looking thing. But it should do the trick, he hoped.

"Alright" his voice was deadened by the mask "Let's go back in!" He gave the door a shove and hurried inside, the nuns following. He ran to the spot where he remembered seeing the photograph and flung himself on the ground, desperately searching for it!

"A ha!" He grasped it in his hand and brought it close to the foggy lenses of the mask. The photo was not in good shape but despite the aged paper, bent and yellowed, he had recognized correctly the image. It was him. Well, not exactly him. A very old picture of him from many regenerations ago! He had to smile at how he looked then! The frizzy hair and the strangely long scarf and the silly smile! And beside him was the funny mechanical dog who had been his companion! K-9! The photo brought back such amazing memories of adventures past! The doctor sighed with nostalgia but his mind was also busy wondering how this photo had gotten here and how it had gotten into the possession of whoever had been in this room. Perhaps he had encountered them before, back in the days when the picture was taken? He just couldn't quite remember it.

Meowline's voice broke through his reverie. "Doctor? Are you alright, Doctor? We've sound some other clues!"

He quickly stuffed the photo into his jacket and got to his feet. He noticed that it took some effort to do so and knew that the environment was weakening him, even with the mask to slow the effects slightly. "We'd best gather it up and leave quickly!" He suggested. Meowline nodded.

* * * * * * * * * * * * * * * * * * * * *

Safely outside they gathered. The sisters had found a few things, mostly useless, but of particular interest to the doctor was a small cylinder. It seemed to be some kind of tube that was sealed tightly. It was fairly heavy and metal and glinted in the sun. The Doctor could sense that there must be something important inside of it. A feeble attempt was made by Meowline to open it but the Doctor denied Meowrita's request to try to bust it open herself. "We don't know what is inside it yet" The Doctor noted. "It would be best to play it safe for now. I will have to give it further inspection back at the Tardis!"

"We should get back to the convent..." Meowrita said. "The others will worry."

"But we must help the Doctor!" Meowline protested.

The Doctor felt that he would much prefer to be alone with the photo. "Oh, you should go back."

"But---!"

"Don't worry, Sister! I will come by later after I have figured out what is in this tube! I will certainly need your help to get rid of those Sireens and solve this mystery!" The Doctor offered her his best reassuring smile.

"Alright" Meowline conceded. "I want to help in any way I can!"

"Come along, Sister." Meowrita had taken Meowline's hand and begun to lead her away. The Doctor smiled and nodded as they departed and then quickly rushed back to the Tardis where he could be alone.