Author's Note: So I've been re-watching episodes of CSI and this particular story was inspired after I watched Season 14, Episode 9: Check In and Check Out. That's the episode when Hodges and Henry go to the infamous room 114 at the Skyview Motel. As I re-watched that scene, I thought… what would have happened if it were Greg and Morgan in the room instead of Hodges and Henry? So…. That's what I've done!

Greg and Morgan went back to the motel to look for something, anything that might be causing the people in room 114 to become violent. So far, they had no reason to believe that any of the people who'd been in the room would have normally behaved in such violent ways.

Morgan started near the bed and Greg took the bathroom. She took samples of the mattress, the carpet, the carpet pad and even tested the walls to see if she could find anything unusual.

"So, what do you think is causing this?" Greg called from the bathroom.

"I don't know. A toxin, maybe? Mold? Fungus? This place isn't exactly five-star quality, who knows what's growing behind the walls and in the ventilation system." Morgan answered as she put a piece of carpet into an evidence bag.

"Yeah, the pipe in this sink is pretty disgusting." He replied. He stood up to look around and grimaced when the automatic air freshener sprayed him in the face. He wiped his face and continued working, collecting water samples from the sink and the tub. He swabbed the faucets for each, making sure to put the samples and swabs back into the kit.

Morgan took a sample of the bed covers, even though they were recently replaced, just in case. She test the vents and didn't find anything. She even tested the air conditioning unit installed near the window. She scanned the room one last time and realized she missed something. Morgan opened the closet and held out the mold tester, which beeped and showed a positive result. She sighed.

"Hey, Greg? I got mold in the closet, I think I'm going to have to take a sample of the dry wall. Do you have the pry bar in your kit?" She stared at the wall for a moment, but Greg didn't respond. The bathroom door was open, but from where she was standing, she couldn't see inside.

"Greg? Do you have the pry bar?" She asked again. After receiving no response, she put down the mold tester, switching it off.

"Greg…? Are you taking a nap in there?" She walked towards the bathroom to check on him and to see if the pry bar was there. She peered around the corner and saw the kit, with the pry bar sitting right on top.

She sighed and turned to ask Greg what was wrong, when she frowned. He was standing in front of the mirror, glaring at it.

"Greg?"

He didn't say anything. Instead he reached up and grabbed the sides of the mirror. His breathing sounded funny and his eyes looked different. Morgan felt a sickening chill go over her; she'd never seen a look like that in Greg's eyes before in the years she'd known him. They were wild and cold all at once; his jaw was clenched and a thin sheen of sweat coated his face. The whites of his eyes were bloodshot, but his pupils were so large that his eyes looked black.

"Greg?" She whispered. His eyes suddenly focused on her reflection in the mirror. He bared his teeth at her and a low guttural growl came from his throat. His grip on the sides of the mirror tightened.

"I see it." His voice wasn't its usual, soothing deep tone. It sounded as though he had gravel in the back of his throat.

"What?" Morgan asked, taking a slow step backwards toward the door.

"I know what it really is." Greg snarled. Suddenly he brought back his fist and punched the mirror as hard as he could. The entire thing shattered, pieces of it landing in the sink and on the floor. Blood in the shape of his fist sat on what remained of the frame and the mirror. Morgan yelped and jumped.

"Greg…what's wrong with you? What happened?" Obviously whatever was making people crazy was in the bathroom, but she couldn't figure out the source. Blood dripped onto the floor from his fist and she could see small pieces of mirror imbedded in the wounds on his knuckles.

"Do you KNOW WHAT I SEE EVERY DAY?" He roared, slowly walking closer towards her. Morgan looked at the pry bar and then back at him.

"No, what do you see?" She asked, inching towards it.

"I see them. I see the dark shadows that sit at the corners of existence, preying on the negativity of the world, feeding on it and getting stronger. People believe in things like the devil and their belief in him and his influence gives him power over them. Do you understand me?" He whispered, his voice going quiet.

"Yes." Morgan said, wanting to agree just so that he wouldn't get violent again.

"NO YOU DON'T BECAUSE YOU DON'T SEE THEM. I ALWAYS SEE THEM, I'VE SEEN THEM SINCE I WAS OLD ENOUGH TO FORM MEMORIES!" Greg screamed, grabbing her by the shoulders and shaking her roughly. Morgan winced.

"Greg, that hurts!" An odd look passed over his face. He tilted his head to the side and looked at her with his black eyes. He blinked furiously and let go.

"Get out." He whispered.

"What?"

"Get out…. There is something inside of me that will hurt you. GET OUT!" He yelled, grabbing her again. She lunched for the pry bar, but Greg lifted her of the ground and slammed her into the other mirror. She screamed, tears rolling down her face. Greg made a choking noise and squinted at her. She could see some kind of mental conflict tearing him apart. She kicked him and he dropped her. She fled the room and slammed the door shut, grabbing a chair and shoving it under the doorknob.

She heard a tortured yell come from the bathroom. She jumped when something large and heavy struck the door, probably Greg with the pry bar. Shaking, she pulled out her radio and called for backup.

"Send medics, Greg's gotten violent and crazy!" She cried.

~XXXXX~

The police arrived and sent Morgan out of the room. The paramedics arrived shortly after. They looked over Morgan, but didn't find any injuries. They went inside the hotel room and she waited by the Denali. She didn't even hear someone drive up.

"Morgan? Are you okay?"

She looked up to see Nick, looking concerned. Russell came out of the car, too.

"What happened?" He asked.

Morgan summarized the events, describing Greg's quick descent into madness. "I don't know. He just…he wasn't Greg anymore." She said. They heard yelling in the hotel room. Nick and Russell went to help. Morgan grabbed a swab, hoping that once they had Greg strapped down, she could get a sample and have Henry run a battery of tests on it, but she didn't want to go back into the room and see Greg like that again.

Nick and Russell entered the motel room. The police were standing back. Officer Akers had a Taser pulled out, and one of the paramedics was holding a syringe of something. The other officer had his phone out, but no one paid him much attention. Greg stood there, blood on both hands, glaring at them. He grinned, his mouth filled with blood.

He lifted the pry bar. He'd torn his way through the bathroom door with it, leaving a huge human sized hole. He opened his mouth and let out a noise that neither Nick nor Russell had ever heard another human make. He swung the pry bar at one of the paramedics, who dodged it and stabbed him in the neck with the syringe. The other paramedic pulled the pry bar out of his hand when he was busy yelling at the paramedic. The whole thing reminded Nick of that movie, 28 Days Later. Greg reminded him of the zombies.

It took two paramedics, Officer Akers and Nick to restrain Greg completely. Nick stared at his friend, not believing his now unfamiliar looking face. The whites of his eyes were the color of blood and the irises were black. He was breathing raggedly from clenched teeth as he glared into Nick's eyes.

"Greg, man, c'mon!" Nick said. Greg's response was to attempt to savagely bite him before his eyes suddenly rolled back into his head and all his muscles relaxed. He slumped forward and the paramedics put him on a stretcher. When they wheeled him out, Morgan came forward and got a saliva sample. Greg moaned and rolled his head back and forth.

The paramedics rushed him to the hospital and Morgan rushed back to the lab to get tests run.

~XXXXX~

Once Morgan dropped the sample off, she went back to the hospital to get an update. Henry got the test results back quickly and rushed to the hospital to let Morgan, Nick and Russell know.

"Greg was dosed with a very high level of LSD, a type that was cut with… PCP." Henry said. Nick groaned. Morgan sighed.

"Did we discover the source?" Russell asked.

"No, but Hodges and I could go back with masks and suits and analyze the bathroom." Henry offered.

"That sounds great, you two do that. Thank you." Russell said. Henry left.

"Nick, could you go with him, just in case they do find something?" Russell asked.

"Sure thing." Nick agreed and left to follow Henry.

"Morgan, are you okay?" Russell asked.

"Sure, I'm fine. I'm more worried about Greg." She said.

"You're sure? I mean, seeing a friend like that can be traumatic, especially since he physically attacked you." Russell said quietly.

"Considering how the other victims turned out, I think I was lucky. I don't even have any cuts, just some bruises. You know, I could see… something inside of Greg, fighting it. He was fighting the paranoia, the urge to be violent. It was actually kind of amazing." She said. Russell smiled.

"Greg's a strong guy. Could you stay here with him and update us on his situation?" Russell asked.

"Definitely." Morgan agreed.

~XXXXX~

Morgan sat by Greg's hospital bed, watching him sleep. His face was relaxed, nothing like it had been earlier. She knew that the only reason he'd acted that way was because he'd been dosed with drugs, and she couldn't and wouldn't blame him for his actions, but every time she closed her eyes, she saw the terrifying look in his eyes back in the motel bathroom.

He had an IV in his arm, pumping him full of fluids and the doctors explained that it would be a few hours before Greg came out of his sedation and the effects of the drugs wore off. Nick texted Morgan video of Greg's apprehension; apparently the second officer with Akers had filmed it for evidence. She watched the video. Greg looked vicious and she could see the hole in the door that he'd created. She watched him try to take a chunk out of Nick after the paramedic sedated him.

She put her phone away and sighed. Morgan took Greg's hand in hers and rested her head against the side of his bed to wait out the sedation. It seemed as though only minutes passed, but later when she checked the clock, she realized it had been an hour and a half. Morgan stirred when she felt movement and she lifted her head to stare up at Greg, whose eyes were open and looking at her.

They were the kind, beautiful brown eyes she was used too. The ones that she sought for comfort more than once, the ones that made a small blossom of warmth spread through her chest every time she saw them. That warmth spread through her chest now.

"Greg, you're awake! How are you feeling?" She asked, still holding his hand. He looked down at her hand, gripping his. His knuckles were wrapped in bandages and a little blood showed through.

"Confused. I… don't think I'm remembering what happened correctly." He said slowly.

"What do you remember?" Morgan prompted.

"I was standing in the bathroom, frozen and unable to move. This big shadow figure went on a rampage and I tried to stop him, but I couldn't. He… tried to attack you? That's what I remember, but I know it's impossible." Greg said. Morgan sighed and looked at his wounded hands.

"No, that's not what happened." Morgan said. "You were dosed with a mixture of LCD and PCP while in the bathroom. All those things the shadow monster did were things that you did."

Greg stared at her. He blinked slowly and abruptly removed his hands from hers, looking horrified.

"Greg, it wasn't your fault! I know you're going to feel guilty, but you can't. You weren't in control of yourself." Morgan insisted.

"I…hurt you, didn't I?" He said, his face pale.

"No, you didn't. I'm not hurt, you didn't hurt me!" Morgan said, sitting up straight, showing him that she was fine. Greg was shaking his head and she could see tears shining in his eyes.

"I remember what I did. I grabbed you…I slammed you into the mirror." His voice caught in his throat and he covered his face.

"You were not you and you didn't hurt me. I don't even have a scratch." Morgan said. "I will not let you beat yourself up over this when I didn't get hurt and I don't blame you for it. In fact, considering how horribly it went for all the other people dosed with that mixture, I would think that you'd be glad that you somehow managed to show restraint."

Greg removed his hands from his face to look at her. "Restraint?"

"Yes. I told you to stop, that it would hurt and you listened. I could see it in your eyes, you were fighting whatever the drugs were doing to your mind." Morgan said. Greg sighed and shook his head.

"Yes, but… it won't change the fact that I physically attacked you. If I had hurt you any worse, I…wouldn't be able to forgive myself." He said. He blinked and quickly wiped away a tear. Morgan leaned forward and put her hand on his face. He lifted his gaze to stare at her.

"Greg, you were a victim of something. This isn't your fault and I don't and won't blame you. I care about you and I can't stand the idea of you feeling horrible about something that wasn't in your control." Morgan said quietly.

He reached up and touched her hand, which was still on his face. "I'm so sorry for what I did. Please forgive me." He whispered.

Morgan leaned forward and pressed her lips against his, bringing up her other hand to cup his face. She pulled away after a moment to gauge his reaction. He looked surprised.

"You're forgiven, even though you don't need to be. As long as you're healthy and safe, that's all I need." Morgan said. He smiled and pressed his mouth against hers. When they pulled away, they studied each other.

"A hospital is not my idea of a first date. How about that new fusion restaurant downtown? When you're out of here and ready, of course." Morgan said.

"I'd go to a dumpster in an alley and be happy as long as you were there with me." Greg replied. Morgan felt her face flush. She kissed him again.

"Me too."