AN- Thanks to the people who reviewed the last chapter. I'm not very good at writing fight scenes, so I hope it was ok. Anyway here's the next chapter and the mystery Whitelighter is finally revealed! Enjoy!

Disclaimer- I don't own Charmed or any of the characters.

…………………………………………………………………………………………

Luna waited for the screaming and shouting that she knew would follow Paige's statement. To her amazement she was met by silence. Phoebe was the first one to break it.

"That's a pretty cool power, Lu."

Luna smiled weakly.

"Thanks, I call it 'Glimmering.' It comes in damn handy when you're demon hunting."

Prue fixed Luna with her sternest gaze.

"Luna Penelope Halliwell, what the hell have you been up to these past three years?!"

Luna sighed; there was no way she was getting out of this. She was going to have to tell them the truth. She opened her mouth and started to speak, when suddenly her Whitelighter burst through the door.

"Lu! Thank God you're alright! The demons were stopping me orbing in and...."

The angel trailed off as he caught sight of the Charmed Ones. His eyes widened. They weren't meant to see him! The Elders had specifically forbidden it. He was in so much trouble now!

"Kyle?" Asked Paige quietly. "Kyle Brody?"

The four older witches stared at him, speechless.

Luna, however, looked quite pleased. Her sisters' attention had been drawn off her for the moment and on to the Whitelighter. She decided that her opinion was needed.

"Dude, you are so screwed!" She said laughing, mostly with relief that she didn't need to confess her double life just yet, but also partly at the look on Kyle's face.

Prue shot her a glare.

"Don't think that just because a family friend has come back from the dead and has burst into our attic, that you're off the hook. We are going to talk about this later, missy.

"Somehow I think that all of this connected. You know, the demon attacks, Luna coming back and now Kyle." Said Phoebe with a thoughtful look on her face.

Luna rolled her eyes.

"How long did it take you to figure that out?" She asked sarcastically. "It's good to know that all those years at school paid off."

She received more than one annoyed glare at that comment. Paige remained silent throughout the conversation, finding all of this extremely hard to believe. She walked over to Kyle and put her hand up to his face. Tears sprung to her eyes.

"Paige...." He murmured. "I'm sorry I couldn't come back sooner. They wouldn't let me."

Paige just shook her head slowly.

"It's ok..." She said in a choked voice. "You came back anyway."

"Awww,"

Everyone shot a look at Luna, who put on a face of pure innocence.

"How did you know how to kill those demons?" Asked Piper suddenly. "None of our attacks seemed to affect them at all."

Luna looked up at Piper.

"They were Pack demons. Most demons work by themselves, but these work in a group. They're mentally connected, so when you kill one the others feel it. That's why they tried to hold the second one back after I killed the first one. The only way you can vanquish them is to stab or shoot them with something made from silver."

Prue nodded in understanding.

"That's why you used the silver dagger."

Piper still wore a confused expression. Kyle caught Luna's eye.

"You need to tell them now Lu." He said quietly. "We need their help if we're going to win."

Luna nodded reluctantly.

"You're right..." She looked at her sisters. "I've been keeping more than one secret from you guys and I'm sorry. It wasn't fair for me to disappear for three years and leave you worrying about me. You should know though, I didn't want to leave. Certain.....circumstances forced me to. I guess it all started when I first got my powers. I came home from school to tell you and I heard you talking about Binding my powers. It made me so angry. I didn't think it was fair for you to decide whether I could become a witch or not. So I didn't tell you."

She took a deep breath. This was harder than she thought it was going to be.

"I first became Spirit shortly after that. I was out with some friends, when a fire engine practically flew past us. We decided to follow it and saw a block of flats that was on fire. The Fire-fighters couldn't get close enough and there were still people inside. I just followed my instincts and glimmered in. I helped those people get out. The feeling of saving those peoples' lives was incredible. I knew what I was supposed to use my powers for and I became Spirit. Every night I would sneak out and patrol the city. Sometimes for demons, or sometimes just to help people who needed it. I eventually was recognized by the magical community and became a hero to them. They, however, weren't the only ones to notice. The Elders found out and told me about my destiny, which was why I had to leave."

Prue looked shocked.

"Wait, all this was why you used to come in late every night? You were out protecting the innocent? But what about that night you came in acting like you were drunk?"

Luna scowled.

"Damn fairies. I was out helping them and they didn't believe me when I told them I could see them. They emptied a whole bucketful of fairy dust on my head. I was acting like a two year old for the entire night."

Phoebe snickered.

"That's no different from usual then." She said jokingly.

Luna just stuck her tongue out at her big sister.

"You mentioned something about your destiny?" Asked Paige, quickly diffusing the argument that was about to take place.

Luna nodded.

"You know your theory that something big is about to happen? Well, you're right. It's the Final Battle between Good and Evil. Three years ago, the Elders summoned me Up There and told me that I was the Moon Spirit. I'm supposed to lead the creatures fighting for Good. They sent me all over the world to prepare for it. I only got back seven months ago and I've been building an army since then."

"That's why you left me the Unbinding potion." Said Paige, realisation dawning on her. "You need the Power Of Four."

"Yes, to be honest I didn't really want to drag you into this, but there's no way we're going to stand a chance without you. The demons know that too. That's why they attacked you last night when you didn't have any powers." Explained Luna.

"We need you." Added Kyle. "Good can't win unless we have the Charmed Ones on our side."

Prue glanced round at her younger sisters. She knew it was pointless to try and convince Luna not to fight, and someone needed to keep an eye on her. She quickly came to a conclusion.

"I'm in." She said. Turning to Piper, Phoebe and Paige, she waited for their answers.

Phoebe and Paige looked as if there was no argument.

"We're definitely in."

Only Piper looked as if she was having trouble accepting the idea. After much debating with herself she eventually agreed with her sisters.

The Power of Four would fight in the Final Battle.