Hi Charlie.

Tyler says hi. He found out about this book. I feel kind of bad now- I practically bit his head off when he started teasing me about it. I mean, he wouldn't give it back and I must have gone red as he asked if it was naughty! Can you believe him? He's such an idiot sometimes.

I hope you don't mind me making copies of these letters. I would hate to lose them, considering they've helped me so much. I know you don't reply, but it's nice just getting the opportunity to… talk to you, I guess. It would be much nicer if you replied, but I haven't figured out how to send messages to Elysium, or if I even can. I wonder if Hermes will help me.

I'll write soon,

Love Sage xxxx

PS- I think we're getting a new kid- Dean Archer, I think. I just hope he's not another idiot.

"Ugh, go to sleep…" Tobias threw a pillow at her. For some reason, she had felt like sleeping the Poseidon cabin that night, her father and older brothers present. The triplets went everywhere together, so they often spent one night in Cabin Three and the next in Cabin Six.

"I am." She threw the pillow back, hoping to hit him, but without his ADHD medication, he had the reflexes of a ninja; catching the pillow with his face buried in the mattress. He held the pillow over his head- moments later; he relaxed and started to snore softly. Sage marvelled at him.

She was woken later that night by her phone buzzing under her pillow.

Grumbling, she reached for it, wearily blinking sleep from her eyes.

It was bang on midnight! Why was Tyler texting her?

Happy birthday, Sage! Xxxx

Why are you texting so early?! -_-

First to say it! WIN! :D xxxx

Did you stay up all night just to be the first to text me happy birthday?

Yup :P xxxx

Thank you, but you're an idiot xxx

I knew you would say that. Hey, are you at home or at that summer camp place thingy? Xxxx

Summer camp. Why? Xxx

Your birthday pressie! Duh! Xxxx

You didn't have to get me anything xxx

Too late. Lost the receipt anyway :D xxxx

Stupid :) xxx

Hey, I got a smiley! Things are looking up! :D xxx

Good night, idiot xxx

Morning! Xxxx

Whatever. I'm going to go to sleep before Dad wakes up and confiscates my phone for eternity xxx

Aw, poor you :P xxxx

Sage returned her phone to under her pillow and settled back down to sleep, checking on her father before. He was still asleep, thankfully, drooling and lying on his front as usual.

"I hate your phone." Max mumbled from the next bunk over. Sage turned and looked up at him on his top bunk.

"And if you want to keep your girlfriend, you won't say anything to Dad." Max blearily stared at her for a short while, eventually giving a tired grunt of agreement and rolling over. He, too, was asleep within minutes. It seemed all her brothers could sleep at the drop of a hat.

Well, maybe not Alvie, the poor sod.

Hold on… where was Alvie?

Sage sat up, reaching over to her brother's bunk, below Max's.

The sheets were cold- he had clearly gotten up and wandered off- he did sometimes- but where?

Sage freed herself from her warm bed, pulling her purple dressing gown over her pyjamas- an old T-shirt of Alvie's and her owl pyjama trousers.

She carefully snuck about the cabin, hissing her missing brother's name and doing her best not to wake the others. She checked every inch, but Alvie wasn't here.

Reluctantly, she padded over to her father and started prodding him awake.

"Mmm…" He complained.

"Dad, get up."

"I know it's your birthday, but it's early…" He protested, his voice muffled by the pillow.

"No, it's not that. Alvie's gone." Percy opened his eyes then, sitting up.

"Oh, for the love of Hades' underwear…" He grumbled, forcing himself up. He threw his pillow at his sister on the next bunk, to which she woke with an Ancient Greek curse ready and directed at her brother. Sage barely noticed, wondering why her father or anywhere would like Hades' underwear…

Louisa looked irritably at her brother.

"What?" She growled.

"Alvie's gone. Get up."

"Ya really should put a leash on that one…"

"Sage, stay here in case he comes back." Percy ordered kindly. Sage nodded as he glanced at his two sleeping sons.

"Do we wake them?" Percy debated for a moment and then shook his head.

"Alvie can't have gone far. Probably the lake or something. Lou, get up."

"Ugh… why?"

"Alvie. Gone. Psychic. Nutjob. Move it." Louisa glowered at her brother, but got up anyway, slipping her sneakers on and sulking out the door. Percy sighed. "I love early mornings."

"Sorry."

"No, better to wake me now than later." Sage nodded again, looking at her brothers and her two cousins. They all slept soundly- mostly anyway. Elsie looked like she was trying to tear her pillow apart.

Sage returned to her bunk as her father ran after her aunt. She pulled the blankets about her and over her head, setting her red journal in her lap.

Hi, Charlie.

I know I normally don't write twice a day, but it's nice to.

Alvie's gone walkabouts. I hope he's OK, but you know what he's like. I was going to tell you he had a really weird 'prediction' the other day, but seeing as no-one but Crystal was with him at the time, I'm not sure if he actually saw that or if Crystal had somehow bribed him into telling me. But apparently he saw me in a wedding dress and walking towards Tyler.

He's losing it, I swear! Tyler's just my friend, who happens to be a boy, but we're just friends. It has to be Crystal bribing him- she's going on about OTPs now and I really wish she didn't have a fanboy living with her. I mean, I know I go on about OTPs and call you fandom names, like Muggle and pansycake, but you don't understand and she does and it's so unfair! I can't insult her in a fandom way because she retorts in a similar style. You just stand there and looked gormless.

Alvie has been acting really weird lately though- like he knows something will happen. I suppose he probably does, but it's hard to tell as he doesn't always talk about it. I wonder if he has a journal or something where he documents dreams or visions or whatever. I would look, but he's very good at hiding stuff. I found out that he hid this book that he was reading- and wouldn't let me read- in the cupboard in a cereal box. It worked even better because I didn't like that cereal, so it's unlikely I'd take it from the cupboard.

Maybe Alvie's gone to Mom… I'm off to go and look, I'll talk to you later.

Love Sage xxxx

Sage tucked the journal under her pillow and got up, pulling her sneakers on and heading out in her pyjamas and dark purple dressing gown.

Her mother's cabin wasn't far, but she had to be quick all the same- she wasn't overly fond of the harpies.

Annabeth was awake, also in her pyjamas, and moving about one of the workbenches, fussing over blueprints and notes. Sage saw her younger siblings in the far corner of the cabin; Lilly nestled on the bottom bunk of the one furthest from the door and her two brothers either above or on the bunk next to her. They were very protective of Lilly, which Sage admired, but it did get on Lilly's nerves occasionally.

"Hi, Sage."

"Hi, Mom."

"Happy birthday."

"Tyler's beat you to it already." Annabeth wrinkled her nose at this, but she was smiling all the same. "What are you doing?"

"I had an idea," She gestured at a fresh sheet of paper near Sage, "And then I wanted to know what the others were working on. Some very good ideas here. Are you alright?"

"Alvie's gone walkies. Dad and Lou are out looking for him." Sage glanced around, but couldn't see her brother hiding anywhere.

Annabeth sighed.

"He did stop by. Asked for some paper and a pen, but walked off. He was in one of those funny moods where it's best to leave him on his own to think."

"Where did he go?"

"I'd have thought Cabin Three." Annabeth's brow furrowed. "He was here just a minute ago."

"But he's been gone for hours."

"How do you know?"

"Cold bed sheets." Annabeth just nodded. "And I didn't see him here on the way over."

"Invisibility."

"He can do that?"

"Has done for years. I thought he told you?" Sage shook her head. "Hm." Annabeth looked back at the blueprints, her fingers tracing the notes as she read.

There were footsteps on the porch outside and then Percy ran in.

"Have-?"

"He was on his way back to your cabin." Annabeth answered, smiling at his perplexed look. He saw Sage and made a face at her.

"I told you to stay there in case he came back."

"I know, but I got bored. And he's invisible, which doesn't help." Percy just rolled his eyes.

"Go back. See if he's there now and make him stay." Sage nodded and left her parents to talk.

Now she knew Alvie had been walking about, invisible, she tried to look for traces of that. Her own footprints were here from her walk over, but there were some more footprints in the mud, a metre from where hers were.

Had to be Alvie.

She quickened her pace, leaving her muddy shoes by the door.

Alvie's bed was still empty, but she heard muttering from outside. Tip-toeing through, she found Alvie outside on the small pier to the back of Cabin Three. The lake stretched as far as she could see, the moon's reflecting gently distorted in the near smooth surface.

Her brother was sat on the end, one of his feet dangling in the water as he leant on his other knee to write on a fresh pad of paper his mother had given him.

Sage hadn't made a noise entering, crossing or leaving the cabin, but he must have sensed her all the same as he peered over his shoulder at her. She gave a small wave, gaining a nod from him before he turned back to whatever he was writing.

She wasn't surprised to see his white-golden cloak about his shoulders. It was there so often, he looked weird without it.

The pier creaked softly under her feet and she sat next to him, the water skimming over her toes. She tried to read what he was writing, but he turned the notebook from her, much to her annoyance.

They sat in silence, Sage trying to get a hint of whatever he was writing, but he kept that firmly out of view.

When he finished some time later, Percy and Louisa had made their visits- Percy relieved to see him and Louisa threatening to drown him- Alvie looked at Sage. Their father and aunt had returned to their beds, leaving the back door slightly ajar behind them.

He said nothing for a while, his eyes getting paler and paler until there was no grey, just pure white.

"You write to Charlie." He eventually claimed. Sage just nodded. Alvie looked back out over the water, twirling the pen between his fingers and thumb.

"What were you writing?"

"No."

"Why? Is it bad?" He shook his head. "Why can't I see it then?"

"It's not good to know the future all the time. You'll try and change it." Sage opened her mouth to protest, but he was right. She had the same fatal flaw as her mother- hubris.

"It's not bad though?"

"You'll be fine."

"Is anyone else involved?"

"Like who?" He looked back at her, his eyes imploring and studying hers. She tried to clamp down on her thoughts, but it was no use. Alvie had mastered mind reading over the years, easily picking apart distractive thoughts and uncovering the truth. "Who's Dean Archer?"

"I don't know him, but he's this new kid we're supposed to be getting."

"Don't upset Tyler."

"Don't- what?" But Alvie had fallen quiet and Sage knew it would take a miracle to get him to talk again.