Disclaimer: Don't own the TMNT, no matter how many times I've prayed to the cartoon gods. I hope this chapter will make sense. OC's are mine, no touchies! Oh, and I couldn't remember how to spell Tokka and Razaa's names, so if anyone knows, please tell me and I'll correct it pronto!

All activity stopped as a resounding knock echoed through the Lair.

Mikey paused his movie, grabbed his nunchakus and peered out into the sewer, his brothers forming a 'v' behind him, should trouble have actually come 'a knocking'.

"It's just me, Ana, and Lily." I said, hoping they would recognize my voice. As to how I'd found the lair, Ana used her mental powers to lock on to their 'signal', and led us on a merry hunt through the streets, and sewers, of New York. I stepped further into the light.

"Oi, welcome back babe!" Mikey enthused, opening the door for us. He gaped. "And who are these bodacious babes you brought with ya?"

I laughed.

"Guys, this is Anastasia Williams," I pointed to the blonde near-carbon copy of myself (with minor tweaks, of course), "And this beauty here," I giggled as Lily flushed, "Is Lillian Mauser."

Hey Leo, hey Donnie! Ana squealed, racing over to give them both a hug. She noticed the two other turtles, and Splinter standing a little ways back. Hi, how are you doing?

Ah, Ana- the perpetual fountain of bubbly happiness! She approached the other two slower than she had Leo and Donnie, while Lillian, Lily for short, held back behind me. Lily's always been a shy, quiet one, while Ana was the wild and crazy party-girl; I kind of fell somewhere in between their polar ends of the personality spectrum.

I saw that she and Mikey hit it off pretty well, both being hyper and goofy, while Raph, his distrust of strangers well apparent, stuck close to Master Splinter's side. I had sympathy for him. It's not every day you have three mutant females drop unexpectedly into your home, none of which you know well. I decided to make formal introductions with Splinter.

"Sensei," I said, using his formal title, "These are my close friends Anastasia and Lillian. I assure you that they trustworthy, caring people who will understand your plight." I chuckled, adding, "That, and Ana got Leo to dance."

Leo got this Kermit look; you know the one where he's annoyed? That look, combined with a dark flushing, made quite a spectacle. Even Lillian gave her two cents, giggling.

"Is this true, my son?" Master Splinter asked, whiskers twitching amusedly. Leo's mouth worked, but no sound escaped, his embarrassment too great. Master Splinter took pity on him, as Mikey and Raph cracked up No way bro! "There's no need for answer, my son. I am pleased you have dabbled in the finer arts." He smiled, turned to us girls, and said, "It is a great pleasure to see you again, Miss Spade, and even greater to meet some of your friends." He gave a slight bow, which I returned. "Please," He said, as he hobbled to his railcar, "Make yourselves at home."

I smiled. I really liked this Splinter. He was like the eye of the hurricane, silent, calm, but with a tremendous sense of power.

"Hey Lily?" I asked, turning to the mouse-girl. She was petite, even smaller than Ana's 5' 5" frame, with pale milky skin, large brown eyes, shaggy grey and brown hair to her waist (currently in a braid), and two extremely cute mouse ears peeping out from her thick hair. She was dressed in khaki shorts (a hole made for her thin, whippy tail) and a maroon turtleneck, complete with hiking boots and square-rim glasses perched on her adorable pink nose. She was built similarly to myself and Ana, except she had claws instead of fingernails, and if you looked very close, her skin was covered in a soft, almost translucent, down of light brown fur. "Lily, do you have those notes we made last night?"

It was two days since we'd infiltrated the installation, and from Ana's probing, my interrogations, and Lily's deductive genius, we'd come up with a pretty awful setup.

"Yeah, I have them." She said, in her soft, guttural voice, "Where can we discuss this? And with whom?"

"Probably Donnie." I said, and afore-mentioned turtle looked over at us expectantly.

"Is there something I can help you with?" Donnie asked, moving closer to us, his entire demeanor questioning.

I took the proffered papers from Lillian and handed the to Donnie.

"I figure you guys ought to know about this." I said flatly, still worked over about G-man. "We keep our patrons and people we have in hiding informed about odd happenings in the mutant world." I watched his expression carefully, hoping he could help us put more of the puzzle together. "We talked to-"

More like interrogated Ana quipped, looking over from her spot next to Mike on the couch. Apparently they'd been in deep discussion over the latest events in the City.

"-Okay, interrogated, what we believed was an old friend for details, and took a quick peek around the station. Someone is up to something." I muttered, trying to keep my fear from carrying through my voice. I looked Donnie in the eyes. "There is one other thing. The security of the compound was heavily increased from my last run there, and Ana sensed a great deal of stress hanging over almost all of the heads there."

Donnie looked troubled.

"If what this says is true, we could be looking at some serious troubles in the future." He ran a hand over his eyes. "This all points to some mutanic experiment. As far as the stress, I've got a gut feeling that not only have they completed one experiment, it's no longer in their hands." His expression darkened frighteningly. "Henceforth, we may have a new, and possibly dangerous mutant roaming the city."

Mikey blanched to a lighter shade of green.

"You have to be kidding me." He cried. "You mean that they're making MORE mutants? On purpose?" He looked over at Leonardo, who looked equally disturbed. "Leo, bro, tell me we ain't gonna be dealing with another Tokka and Razaa! We were barely a match for them, and we don't have Dr. Perry around to fix up a solution!"

"You have us, and you have your genius brother Donnie." I said firmly, trying to reassure him. "I'm sure, with all our geeky-nerdy-scientific brains all put together, we can come up with a solution." I drew a breath. "There is one problem."

"What's that?" Raphael, of all, asked, his hands resting on the hilt of his Sais.

"We have no idea what we're dealing with." Lillian spoke, for the first time since she arrived. "From what Mika and Ana were able to garner, we could be facing an extremely deadly mutant of one species, like the Komodo Dragon, Panther, or an even worse combination of DNA- a super mutant." She took off her glasses and rubbed her eyes. "As of now, we still are lacking pertinent information regarding the type and species this possibly escaped mutant is." She glanced at Raphael. "We were hoping you could help us out."

"Yeah," I chimed, rising, "This really needs to be stopped. Whoever is funding this project, and whoever allowed this mutant to escape, needs to be stopped." I paused, "Another interesting piece of info, is that they are covering up this scandal, claiming the mutations and mutanogen are being studied for a continuation of stem-cell research."

"Impossible." Donnie denied, vehemently shaking his head, arms folded over his plastron. "I've already research and toyed with that concept. If I can't do it, I highly doubt they can."

Mikey still looked worried.

"What will Master Splinter have to say about all this?"

"The same as the young ladies have said." Splinter announced, causing all of us to jump. We hadn't even heard his approach.

"This needs to be stopped. Immediately."

A/N: A bit long; I wasn't able to find a feasible break-up point for this chapter. Now that Lillian is introduced as the real detective of the operation, will she and Don be able to discover, locate and destroy this could-be super mutant? Tune in next time (if reviews inspire) for more action packed adventure in the Spade series!

Grin I had to do that.