Silence echoed through the whole building. Dean stepped silently down the rusting staircase, his gun loaded and poised to fire at any moment. Nick and Monroe followed closely behind him, each holding a gun loaded with rock salt. Over on the other side, Sam peered around a wall to find that the coast was clear. Slowly he stepped out, followed by Castiel, then by Hank and Trubel. Sam held the demon knife tightly in his left hand and Castiel's angel blade slipped down into his hand. Hank's gun was loaded with rock salt bullets, and even Trubel's machete had been coated in salt. While Nick, Monroe, and Dean had been at the trailer, Sam had explained to Trubel and Juliette about their world of monsters. Cas had then called Sam, saying he had managed to track down the demon to an abandoned warehouse, and within twenty minutes everyone was there. Cas had already sprayed out demon traps in various parts of the building, so now all they had left to do was force the demon into one. Dean had been wary about allowing the others to come but Nick had insisted.

Suddenly Nick stopped in his tracks, causing a chain reaction for everyone else to freeze. A few moments passed before silently, Nick signalled towards the right. Dean, Nick, and Monroe went straight towards the noise Nick heard and Sam, Cas, Hank, and Trubel went around so they would be able to corner the demon. Everything was completely still as the two groups moved cautiously through the building. But that silence was abruptly shattered when someone jumped from the shadows, straight towards Nick. The Grimm turned, fully prepared to strike but as soon as he laid eyes on the person charging towards him, he froze. Everything seemed normal about this person, except for his face. Instead of any features, all Nick could see was a deep swirling mess of black smoke. It was darker and more hideous than anything Nick had ever seen before. He was quickly pulled from his horror when the creature tackled him to the ground. His head smacked on the concrete floor and his eyes went wide with pain.

"Nick!" Hank and Trubel simultaneously yelled but Cas signalled for them to stay back. Dean aimed his gun at the demon but hesitated when he couldn't get a clear shot. Monroe stared at Nick for a moment before he Woged and charged towards the demon. Sam shouted at him to stop but Monroe knew what he was doing. He kicked the demon firmly in the chest, sending him flying backwards. The demon's eyes flickered momentarily black in rage. But when he tried to charge back at them, he found that he couldn't move. Monroe smirked to himself a little as the demon looked up to see a demon trap above his head.

"Nice work" Sam patted Monroe on the back. Trubel quickly rushed over to Nick who was still lying on the floor.

"Nick! Nick, are you okay? Can you hear me?" She propped his head up in her lap as Hank knelt beside her.

"I'm fine" Nick's voice was heavy and strained but it was enough to allow Trubel to relax a little. All heads slowly turned to Dean as he walked over to the demon.

"Oh look who it is, the Winchesters. What a surprise!" the demon drawled sarcastically.

"They know who you are?" Monroe questioned, his eyebrows raised.

"Oh yeah, they all know" Sam smirked despite himself and he walked over next to his brother.

"Even your little angel is here. And it looks like you've made some new friends too. Wow, this really is a party" the demon sneered. But that sarcasm was quickly washed away when Dean splashed holy water on the demon's face. Its loud scream gave Nick a headache and he sharply winced, causing Trubel to involuntarily pull him a little closer to her chest.

"What do you want?" Dean deadpanned, unaffected by the demon's wailing.

"I heard a rumour about a so-called Grimm. I came to investigate. Turns out it was just a rumour. After all, everyone knows Grimm's are just myths" Everyone was silent for a few seconds as they stared at the demon.

"Never heard of a Grimm before" Sam smirked. The demon almost smiled for a moment before Dean began the exorcism, his eyes fixed on the demon's face. This promptly caused the demon to yell out. But then Nick shouted towards Dean, making him fall silent.

"Don't do that yet. There's one more thing I need to know" Nick slowly turned his focus to the demon but he did not dare look at its face "Why did you kill Sophia?"

"I needed a meat suit, she was the most convenient one"

"But why kill her?"

"I no longer had a use for her"

Nick clenched his fists and his eyes glazed over for a second. He looked back towards Dean and nodded. He slumped back against Trubel as Dean's Latin and the demon's screaming filled the air once more. But his eyes didn't leave the demon once, the rage bubbling inside him. Even when the demon burst out of the body it was in and exploded into the air, Nick's eyes stayed fixed on the deep, black smoke until every last bit of it was gone from sight. Slowly, Hank pulled Nick up but stepped back when he saw the anger on his partner's face. When Monroe asked what was wrong, Nick could only reply with one thing.

"We have a whole new world of monsters to fight"