A/N: There isn't enough Nick/Renard stories, so I decided to add mine to the list.

I know this has been done million of times, but I still wanted to write it. Inspired by kyliselle's Kirk/Spock fic falled "Oasis", also by the numerous dimension travel fics I've read in my lifetime.

Timeline: about after Hank finds out about wesen, but before Nick finds out about Renard. Pretty much non-canon compliant after that. Forget the whole thing with Juliette and Renard and the potion, it never happened. Renard saved Juliette, but that's it.

Chapter 1

It started out like any ordinary day. There was a string of weird murders, as always. Given that the victims had been shredded to death, Nick suspected the murders were committed by some kind of wesen with huge claws. They hadn't managed to see the suspect with their own eyes yet, so Nick had no idea what kind of wesen he was.

Nick and Hank ended up pursuing a suspect into an empty warehouse. Although it was in the middle of the day and sun was shining through the dirty windows, they still needed flash lights in the dark building to see where they stepped.

They split up to cover more ground.

Nick thought he saw someone, so he hastened his steps. There was definitely a shadow walking towards one of the doors, which were wide open, allowing the suspect to escape. He cursed and ran. "Police, stop where you are!"

He almost slammed into who he had thought was the suspect, but who turned out to be an old woman instead.

Nick took a hasty step back and lowered his weapon, "Oh, sorry, ma'm. You shouldn't be out here, we're pursuing a dangerous criminal."

The old woman smiled at him, all teeth. The hair on the back of his neck stood up.

"You're lost, Grimm," she said, and her eyes started glowing, blue and incredibly bright. "I'll help you find your way."

He brought his gun up again, only to realise his eyesight was going blurry. He lost his balance and fell down, blacking out.

When he came to, Hank was shaking him awake.

"Nick!" he yelled and slapped his face. "Nick, are you okay? Did the guy jump on you?"

He frowned at Hank, his head feeling like it was going to burst. "Did you catch the licence plate of that car?" he groaned. "I think it ran me over."

Hank laughed and helped him up. "Seriously man, what happened?"

"There was this old lady," Nick explained. His mouth felt dry. "I think she was some kind of wesen. Her eyes were glowing..." He frowned. "She said something about me being lost. I must have blacked out..."

Hank was not definitely not impressed. "An old lady got to you?" he said. "You must be losing your touch."

Nick glared at him, "Haha." He sighed as they made their way to the car. "Seriously, it was weird. We better check the books, I don't know if she did something to me. Might've been a spell or something."

Hank nodded and shrugged, "The suspect got away. The speed it was running though, no way he was human."

Nick touched the back of his head, "Yeah. We better get ready. Next time we'll catch him."

They went back to the station. Sergeant Wu was there, greeting them cheerily. "Forensics went through the scene," he said. "This guy must be really into furries and stuff, I swear it looks like he's somehow mangling his victims."

Nick and Hank gave him a look. Wu shrugged and handed the file to Nick. "Maybe he's somehow made himself a pair gloves with actual fangs on them." At their look, he shrugged, "What? I saw it on Hannibal."

Nick rolled his eyes and took the report. They went through it, but there was nothing to suggest any new leads. Right now, it looked like they could only wait for the perp to show his face again.

"I'm going to get coffee, you want some?" he asked Hank, who nodded. It didn't take too long to run to the coffee shop across the street. He came back with three coffees, and handed one to Hank, before heading toward's the Captain's office. His back was turned, which is why he failed to notice the weird expression on Hank's face.

Since the blinds were open and the Captain seemed to be only doing some paperwork, Nick simply knocked once and then stepped inside, closing the door behind him. He set the coffee cup on the table and sat in the chair.

The Captain stared at the coffee cup like he'd never seen something like it before. Nick felt a touch of worry. He was beginning to suspect the Captain was overworked, staring at coffee like that.

"We chased the suspect but he got away," Nick said and took a sip of his coffee.

The Captain nodded, then asked hesitantly, "Is there something else?"

"Yeah," Nick said, "There was some kind of old lady at the scene, I don't know if she had anything to do with the murders, but she was definitely wesen. She somehow knocked me out and got away before Hank got there." He paused, "Might've been a spell."

The Captain's mouth opened and his jaw worked, but he didn't say anything. He was staring at Nick with a weird expression on his face. Nick couldn't place it. But it made the touch of worry in his gut grow bigger.

"Sean?" he said and got up. He walked closer. "Are you feeling okay?"

"You... You know?" Sean asked.

Nick frowned. "Know what?" He rounded the desk and put his hand on Sean's forehead, or at least tried. The man flinched away from his touch like it burned, getting as far as standing up from his chair and taking a few steps back to get away from the Grimm's reach.

"Are you sick?" Nick demanded, taking a step forward. "You're acting really weird."

"Burkhardt!" Sean barked out, looking more agitated by the second, "Who told you about me?!"

Nick's hands fell to his sides. "You never call me Burkhardt when we're alone," he idly commented. A definite feeling of hurt was beginning to make its way to his chest at the Captain's weird behavious. "Sean, what's going on?"

Sean was frowning at him. He seemed to be calming down. "You never call me Sean," he said, and took a few step in the empty office to circle around Nick, like a lion circling his prey.

Nick blinked. "That makes no sense," he said, following him. "I always call you Sean, except at work when other people are around. We decided it would be too weird for the others if we kept using our first names like at home."

"...Home?" There was something in Sean's voice that broke something inside of Nick. It was scared and hopeful at the same time, just like...

Nick felt the urge to sit down.

"There is something seriously wrong," he said, suddenly abandoning every thought of going home early that night. "We need to see Monroe and Rosalee."

Sean was reluctant to enter the Spice Shop, understandably so, if anything Nick was beginning to suspect was true. They were instantly met with Monroe, who greeted Sean with, "Oh, you again?" and then trailed off, when he noticed Nick behind him.

"You again?" Nick asked Monroe, who opened his mouth to say something. "Wait, I don't want to know. Monroe, something is going on and I don't like it at all. Sean can't remember me. I think someone has been messing with his memory."

Sean gave him a questioning glance in response.

"Again?" Monroe said, frowning, "Just like Juliette?"

Nick blinked. "Who's Juliette?"

Monroe's face fell suddenly. "Oh boy."

"I'm suspecting Burkardt has hit his head, and badly," Sean said, his professional side coming out, all commanding. "He told me he was pursuing a suspect, who escaped. Detective Griffin found him on the ground, out cold." So Sean was playing the 'I don't know anything about this' card, huh? "Came rambling to me about something called wesen..."

Monroe obviously wanted to say something, but a glare from the Captain shut him up.

Nick felt like punching them both.

"You do realise Monroe recognised you, right?" Nick said, "Even if I didn't know what I do, it wouldn't be too hard to realise you're trying to evade this by pretending I'm crazy. Just a few minutes ago you were demanding to know 'who told me'."

Something like shame flickered across Sean's face, but then it was gone, buried behind an icy demeanor. "I don't know what you're talking about."

"And you," Nick pointed at Monroe, "If you think you can just do as he tells you to, no matter what, and not get in trouble with me, I'm going to be disappointed!" He huffed. "Just because he's a royal doesn't give you a right to side with him, especially since I need your help. There's something obviously wrong with him."

There was a silence.

Monroe's eyes were huge, and he was staring at the two of them like they'd morphed into one being and grown wings.

Sean had stiffened beside him, like he was expecting an attack.

"...He's a royal?" Monroe asked.

Nick blinked at him. "What? How is this new information for you?"

Monroe looked baffled. "Nick, we've been trying to find the royal in Portland for weeks, and now you tell me you've known all along?"

"What are you talking about?" Nick said. He rubbed his forehead, feeling like his head was going to explode. "I've known for over two years, ever since he told me back when Aunt Marie died."

"Nick..." Monroe said hesitantly, like trying to approach a wild beast. "Your aunt died a year ago. And I have no idea who this guy with you is, I've met him exactly once when he came into the shop alone."

"What?" Nick said, "That's ridiculous."

"Who is he, Nick?" Monroe said, glancing at Sean, who was looking more uncomfortable by the second.

"I'm his boss-," Sean said at the same time as Nick said, "My husband."