I know I'm sorry this is a terrible chapter but no matter how much I tried I couldn't get it right I'm sorry.

Percy's POV

Percy didn't know what to say. Of course he did have his suspicions when he first saw here. And Poseidon did say he would meet his sisters on the beach but he still couldn't believe his sister was here. Yet Percy couldn't help wondering, what had happened to his other sister, Katrine. Was she even alive?

He just stood there listening to the silence for what felt like an eternity. Everyone's faces were different. Shock, worry, happiness some were just blank. But no matter what the reaction everyone's eyes were on Percy. He shifted uncomfortably. He didn't like all this attention.

Cleo was the first to speak, her blue eyes wide with surprise. "Wait" she held up her hand. "So Percy's my brother, how is that possible, my mother never had any more children." Percy saw her eyes widen even more as she put the pieces together. "Is this something to do with my dad?"

Chiron nodded "It's late now, Percy will show you to your cabin, get some sleep, I'll explain it all in the morning."

Cleo nodded and looked at Percy. Percy indicated for her to follow him and they walked over to the Poseidon cabin. Percy heard her gasp as Cleo saw the cabin. He grinned to himself; Percy remembered when he first saw the shell encrusted walls of cabin three.

Percy opened the door and lead Cleo inside. He climbed into his bunk and shut eyes.

Annabeth's POV

Annabeth watched her boyfriend lead Cleo across to their cabin. She turned around and was about to head back to her own cabin when Chiron called her over.

"What's up?" She asked.

Chiron grimaced. "I fear something is going on."

Annabeth nodded. First the Gods had gone silent, then this girl had turned up out of nowhere. Something was definitely going on.

"I need you to keep an eye on Cleo."

Annabeth nodded and turned back to her to go to her cabin.

"Oh and one more thing, Cleo has a sister called Katrine."

"Where is she?"

"She got captured by Echidna"

Annabeth nodded again. The odds were she was dead.

I know, worst chapter so far sorry. Anyway thanks for reading don't forget to review.