Disclaimer: I do NOT own anything but Sapphire Lagoon. and maybe Leah Tarrot. . .

Chapter One
The Valentine...

So, it's the day before Valentines Day and I found this note in my cabin at Camp Half-Blood. Oh! Sorry 'bout that. My name is Sapphire Lagoon, I am 16 years old and I am the daughter of Poseidon. Before you go: "OMG! Your Percy's sister!". Yes, I am Percy Jackson's sister and he is older than me by six DAYS! Not months; days.

Back to the story. So, yeah. I just found a note in my cabin... blah blah blah. And I have a hunch who it might be. Hopefully you all remember Nico Di Angelo? Good. You do. Well, I think he left this note in my cabin. Time to go check...

"Nico? Is that you...?" I whispered into the darkness of Hades cabin. "Yeah? Last time I checked, I was still me." he said from beside me. I jumped and he started laughing. When I finally found a light he was doubled over clutching his sides. But still laughing; at me. I slapped him up side the head. Ares would've been so proud to see me do that. "What was that for?!" Nico practically screamed at me. "For laughing at me you jerk!" I screamed back "And for asking me to be your Valentine!" "WHAT!?" Nico roared. He, apparently, was as outraged as I was about this whole Valentine thing. When we were finished talking I had learned two things: (1) Nico wasn't my secret Valentine and (2) he had gotten one as well.

With Nico off my list it was time to ask Luke if it was him who sent the Valentine. "Hey guys!" I said as I walked into the Hermes cabin. "Hey, Sapphire!" a thousand and one voices said (over exaggeration). "Has anyone seen Luke?" I asked "Yeah." Leah Tarrot said "Just saw him go for swordplay lessons with Percy." "Thanks, Leah!" I called over my shoulder as I left for the swordplay arena.

When I got there Luke and Percy were just finishing up a little sparing session. "Way to go, PERCY!" I yelled as he pinned Luke to the ground. They both looked over at me. Luke smiled but Percy frowned. "What's up with you, Percy?" I asked my brother. "You always interrupt my lessons." he said. "Oh well!" I snapped. "So what did you want?" Luke asked me nicely. "I just..." I stammered "Can I just talk to you alone. Please, Luke?" "Sure." he said. With a quick glance at Percy he followed me a couple paces away. "Did you leave the Valentine in my cabin last night?!" I asked in a frantic rush. "Whoa. Slow down." he started, laughing "What was the question again?" I repeated the question. "No. It must've been one of the Gods." Luke replied. I sighed as I walked away
Now that I can cross Nico and Luke off my list of suspects I can only think of one more place to look. . .