A/N: New story, I know, I already have way too many but I don't care. XD I wrote this because 1) I think Daniel and Reid would be best friends 2) There's one scene I really want to write and 3) There's only ONE (well okay, now two) Perception crossover and it's not with Criminal Minds. So now there's another one. I hope you enjoy it!

Please leave a contribution in the little box at the bottom of the page that says review. Would LOVE reviews.

BRTxoxo


"Hi baby." Katrina crouched down upon entering the dark apartment and crooned to the cat that rubbed against her lag. His bright green eyes glinted in the moon light, and the shadows played havoc on her senses as they fluttered across the tabby's back. "Oh yeah?" she scratched under his chin as he purred loudly. Katrina grinned and stood up, flicking on the light in the hall of the apartment she shared with her sister and shrugged her trench coat off along with her beret, hanging them on the hook beside the door.

She wandered into the kitchen to get something to eat, humming to herself and pulling the chopsticks out of her brown hair, letting the longs locks fall to her tailbone. She sniffed a container of take out Chinese food to check it as she shut the refrigerator door.

She stopped humming. She sniffed the food again.

There was something wrong here. That smell. It didn't belong. Katrina set the container on the counter top and sniffed again. What was that smell? It smelled like wet dog and… pennies.

Wet dog and pennies? She didn't own a dog. Well, not really.

The apartment suddenly became eerily quiet. She slowly made her way into the living room, sniffing the air. The smell was stronger here, but not the source. The cat ran behind the couch.

She stepped on glass. The light flicked on and she gasped violently as she saw the mess. Like a tornado had ripped through the living room. The couch was in disarray, the coffee table broken, glass figurines and glass cups broken with blood, the window at the end of the room was shattered.

"Hello?" she walked towards the bedrooms and bathroom slowly, tremors gently starting to shudder through her small form. The scent was becoming stronger, and as she turned on the hall light and saw more blood tracked through the hallway. "Oh my gosh." She fell to her knees, overcome with shivers and shudders. "Taryn?" Katrina called out, her voice wavering and cracking. "Taryn?" her throat constricted.

With no answer, the woman with long brown hair and pale hazel eyes pulled out the cell phone from her back pocket and dialed 9-1-1, her fingers slipping across the numbers.

"Nine one one, what is your emergency?"

Katrina could hear phones ringing in the background, other dispatchers talking to other people. "My name is Katrina Powers. I need to report a break in." she swallowed back the tears that were threatening to spill and crack her already fractured composure. "There's blood… everywhere. And… and it smells like… oh gosh it smells like there's so much…"

"Okay ma'am I need you to stay calm, and tell me your address."

She recited her address as she got to her feet and turned the corner to the master bedroom. The door was slightly open, the smell of blood stronger than ever wafting from the room. The bedside lamp was on, the soft glow of its light illuminating the edge of the door.

Gently Katrina Powers pushed the door open, her breathing shallow.

"Ma'am?" the dispatcher one the phone waited expectantly for her to reply.

Her response was a scream from Katrina, right before she began to sob out her sister's name.

"Ma'am I need you to stay calm!"

Katrina had dropped her phone at the sight of her naked, bloody and dead sister. "Taryn!"

The door to the bathroom edged open silently, until the hinges creaked.

Her ears twitched and she spun around to face the man that was still in her house. "No…" she nearly begged as he came closer to her. "No. No! Please!"

"Ma'am!"

Katrina screamed through her tears. "Help! Help me!"

. . .

Within the next ten minutes the apartment was roped off and the entire building was out to see what was going on and why so many sirens had interrupted their dinner.

Police officers and SWAT entered the apartment, breaking down the locked door, clearing the rooms before entering them.

"Clear!"

The lights were still on, everything left as it was when Katrina had been taken.

"Captain!" a young officer, M. Brandt, came running from the master bedroom where he had been with a SWAT member, clearing the room. "Sir you're going to want to see this." He led the captain into the room. The bed was drenched in blood, there was a message written on the mirror in lipstick, the room was turned upside down, a cat peaked his head and wide eyes out from under the bed.

But that wasn't what made the officers blanch and become utterly speechless.

. . .

Doctor Daniel Pierce concluded his last lecture of the day with an impossible assignment. He didn't speak to Lewicki as he followed him to his office, clutching his brown satchel to his chest , his scarf and thick grey wool jacket wrapped tightly around his tall and lithe frame. His black head phones were strapped across his messy mottled hair, pounding The Titan Symphony by Gustav Mahler through his head.

His head was pounding, and Natalie was of no help at all. Completely uncharacteristically for Daniel, he yanked the shades down over the window, blocking out most of the streaming sunlight, and after pulling off his jacket and scarf, and laid face down on the couch, head phones still pumping music through his mind. The professor could hear Lewicki saying something about him needing to eat or even drink some tea. He just waved a hand at him almost angrily.

His head hurt too much to want to do anything. Natalie was nagging at him to listen to Max Lewicki. Lewicki was nagging at him, saying something about trying to help him like he hired him to. And Kate Moretti was gently shaking his shoulder, calling his name urgently.

Kate.

He fumbled with his tape player, turning it off and pulling the head phones. Daniel's head lifted and then returned to its position on the couch, this time lying on his cheek to look at her soft face framed by dark brunette hair.

She smiled gently at him, but something was wrong. Something was very wrong. Her smile was gentle yes, but it was wrong.

"Daniel, do you know two girls by the names of Katrina and Taryn Powers?"

He sat up then, ignoring the pain that pulsed through his head. "Yes, they're my sister's children. She died about a year ago, I haven't seen them in a few years. Why?"

The FBI agent shifted from her kneeling position on the floor to sit next to Daniel, but looked at Max instead. "Uh Max could you leave us alone for a few minutes?" her lips pressed into a smile, and he nodded.

He looked rather perplexed as he shut the door.

"Kate what's going on? This isn't another case is it?"

She took a deep breath. "Actually it is Daniel." She forced herself to look at him, her eyes betraying the emotion she was trying so hard to hide. "Were you close to them?"

"Not particularly. Kat would send me letters though. She still does. Usually twice a month. Why?" he looked imploringly at the small woman and tried to make eye contact, and she was the one to avert her gaze. "Kate what's wrong?"

"This isn't good Daniel. Whatever it is, something bad happened."

The doctor ground his teeth against the pain in his head, clenching his fists in an attempt to control his snap of "I know" at Natalie. "Kate."

"I'm sorry Daniel, so very, very sorry." She placed her small hands around one of his and took another deep breath. "Daniel, Taryn was murdered yesterday afternoon, and last night Katrina was kidnapped. The dispatcher she was talking to heard her screaming for help when she tried to report a break in and found Taryn's body. The police have no leads to go on yet, they're still processing the scene, and they've involved the FBI because of Taryn's… physiological attributes. No pictures have been given to the media to try and find Katrina because we have none of her. She doesn't even have a driver's license."

The pain in Daniel's head was gone. Natalie was gone. The sound outside his head was gone. Kate and her voice and her hands on his were gone. The couch beneath him was gone. And so were Kat and Taryn. The only sound was the subdued beating of his heart inside his chest. He could hardly focus on Kate.

"Daniel."

He was snapped back to reality and Daniel focused back on Kate.

"Daniel they think it may be the work of a serial killer, known to the public as Sweeny Todd. They've asked the BAU to come help with the profiling of the unsub."

"How… how'd they know to contact me?" He asked, slightly dazed, looking off to the side now, but unseeing as he tried to register the information.

"They found a letter addressed to you that was ready to be sent out at their apartment," Kate replied gently, still holding his hand in hers. Her fingers stroked the back of his warm hands, trying to offer him comfort. "They want you to go identify Taryn's body. The FBI have a plane waiting for you."

He blinked out of his trance like stare and looked at Kate Moretti with wide eyes, pleading, need filled eyes. "You're coming with me aren't you?"