Dean

Disbelief coursed through him as he paced up and down the length of the motel room. He glanced around the room, from Cas to his brother, to Anna. Their resident angel was rummaging through their spell supplies, having dropped the verbal bomb that Ana was not only back; but wanted to kill Sam. Anna sat curled up at her bed, tremors occasionally running through her body. Sammy was slumped in a chair near the door, dark rings under his eyes.

Apparently Anna had made a break for the door last night, her nightmares sending her into a wild panic. Cas already healed the fractured wrist Anna had given his brother when he'd stopped her from sprinting out into the night. If it had been anyone but her, Dean would have shot them for hurting Sam. But Anna was curled into herself on top of the painfully orange duvet, looking small and pale under the natural tan she had regained within days of leaving the asylum.

Dean dragged his attention back to their current problem. He watched as Cas methodically drew a sigil in white chalk on the cleared bedside table. A small bowl, and a variety of dried ingredients stood waiting for the white candles to be placed over the corners, covering each meticulously drawn mark.

"Really? Ana?" Dean asked. The red haired angel had been their friend. And now she wants to kill Sam? Dean slumped against the wall. "I don't believe it." He muttered, running a hand down his face. Cas didn't even look up from his work.

"It's true." Anna got up from the bed and wandered over to observe what Cas was doing, steely grey eyes narrowed. Cas didn't seem to mind the hovering, so Dean ignored it, turning on his heel to continue pacing.

"So she's gone all Glenn Close huh? That's awesome." Dean sighed. Their list of allies was growing thinner by the day. Almost everyone they knew either died, or tried to kill them.

"Who's Glenn Close?" Cas asked curiously, looking up at him. Dean shook his head, waving one hand carelessly.

"No one. Just this crazy chick who likes to boil rabbits." The comment was careless, but everyone froze anyways. But when he turned around to look at Anna, it didn't seem like she noticed or heard what he'd said. She was entirely engrossed by what Cas was working on.

"So… T- the plan to kill me. Would it actually stop Satan?" Dean's head snapped around to his brother so fast, it almost gave him whiplash.

"No, Sam. Come on." His brother ignored him, staring at the angel. Dean turned to look too. It didn't matter if it would work; he's not letting it happen. But he wants to know if it would; because he doesn't need to worry about another reason why anyone would try to kill his little brother. Cas stares at them both a fraction too long.

"No." The angel lies badly. "She's a, Glenn Close." Dean shakes his head.

"I don't get it. We're looking for the chick that wants to gank Sam? Why poke the bear?" Anna reached around Cas and snatched the chalk out of his hand. She erased the top half of the sigil and re-sketched the image, neater and slightly more angular than Cas had. The angel tried to swipe it back but Anna just shoved him out of her way. Muttering to herself under her breath, Anna expanded the work, ignoring the angel entirely.

"Uh," Cas answered distractedly, craning his neck to see what the other hunter was doing, "Ana will keep trying. She won't stop until Sam's dead. Oh." He stepped to the side and took over Anna's hovering spot, watching her set up the metal bowl in the center of the central circle, then layering candles around it in a clockwise manner.

"Oh what?" Cas ignores Sam's question, remaining focused on what Anna was doing.

"We will have to kill her first." The angel finished his previous thought. Anna handed the angel the small clear vial of dragon's blood.

"Shield first. Then look." She instructed firmly. Cas nodded back and began to chant rhythmically as he poured the oil into the bowl. Dean glanced back at Sam, who shrugged. His brother has been pouring over Anna's journals and notes over the last few days. The way his brother talked about it, Anna is a genius. Not that they didn't already know that. But she had the kind of research in her journals that even Bobby would be impressed by. And that was based on what Sam had been able to read, who knows what else she had hidden in the journal.

But even with all that, apparently, his brother still has no idea what Anna and Cas were doing.

The candles were lit next and Cas carefully sprinkled something that Dean couldn't identify over the symbol. Anna stood next to the angel, one hand gripping his left arm tightly. Red light flared, and the bowl sparked with fire.

Cas hissed, and Anna caught him before he stumbled back. Her sharp grey eyes were narrowed on the smoky pattern that formed over the white chalk lines. Their resident angel took a deep breath and gently shook off Anna's tight grip. She flinched minutely, but they all caught the movement. Her eyes started blankly at the wall in front of her, hands twitching by her sides, as though looking for a weapon. A tremor ran through her when her hands closed over empty air.

"Well?" Sam prompted. Cas looked over sharply, his forehead still wrinkled in mild concentration.

"We found her." Anna closed her eyes and inhaled deeply. She stepped closer to the table, fingers sketching over the shadowy marks, careful not to smudge the lines as she studied them.

"Where is she?" Dean asked, not liking the looks on either of their faces.

"Not where. When." Cas corrected absently, still focusing. Anna glanced up.

"1978." She informed them, sweeping the ritual ingredients into a bag of salt. They'll bury it later.

"What?" Sam asked confused. "Why 1978? I wasn't even born yet." He came up behind Dean's shoulder, nervous energy pouring off of him. Cas frowns thinking.

"You won't be… if she kills your parents." He answered slowly. Shock reels through Dean. 1978 is before Dean was born. Never born…

"What?" Sam snapped.

"Ana can't get to you because of me. So she's going after them." Cas informed them in his usual matter of fact manner. Guilt rages through him. They haven't even been born yet and they're already getting their parents killed.

"Take us back. Right now." Dean orders calmly. It's taking every ounce of his self control not to scream and rage at his friend. Cas stood tall in front of him, unflinching.

"And deliver you straight to Ana? I should go alone."

"They're our parents Cas. We're going." He snapped back. Anna stepped around Cas and steered both him and Sam into seated positions on the beds. Dean ripped his arm out from her grip, but managed not to snap at her. Anna shot him a hard glare, like she knew what he'd intended to say anyways. He curled his fingers around her wrist, squeezing gently in a silent apology. She barely even glanced back at him, but slid her palm down into his, and squeezed back before letting go.

"Time travel is not easy. Even with the full powers of Heaven at my disposal. Taking passengers… it will weaken me." Cas sighed.

"So what? You're a DeLorean without enough plutonium?" Dean snapped, trying to stand up again. Anna shoved him back into a seated position, pinning him in place with a glare. She waited until he held his hands up in acceptance before wandering away. She knelt down to dig through her trunk, sitting propped open in the corner of the room. Dean ignored her in favor of standing back up, stepping forward to argue with Cas. A book brained him in the forehead.

Anna had thrown it at him without even looking. Sam snickered, and Dean obediently sat back down, rubbing his head where the corner of the binding had hit him.

"They're our mom and dad. If we can save them - and I don't just mean from Ana. I mean if we can set things right… we have to try." Dean glared at Cas straight in the eyes. This is why Cas had defected. Because humanity tried. And that was worth something. The angel opened his mouth.

"Castiel." Anna's voice broke the stare down between them. Cas marched over to her where she'd pulled out a clear jar of blue black sand and a bronze pocketwatch. He crouched down next to her where they had a furious whispered conversation. Anna poked the angel in the chest several times. Finally Cas threw his hands in the air.

"Fine." Anna smiled triumphantly at all three of them, even while he and Sam exchanged bewildered looks. It seemed like they were time travelling after all.

AN:

I know the the angel Anna's name is spelled the same way Anna (the demigod) spells her name. And they are pronounced differently (OC Anna is pronounced the same as Anna from frozen, while Anna the angel pronounces hers like - well you know XD.)

But to make things easier/less confusing the angel Anna is going to be spelled Ana instead.

Thank you to everyone who reviews and reads and favorites this fic, and stay safe everyone!