Disclaimer: I don't' own Percy Jackson but I do own the story line and oc's.
Prologue
Rain pounded against the windows like desperate slaves, thunder boomed over the apartment as the master. In the apartment was a mess, tables turned over, couches ripped, and things out of place. Not a sound was heard besides the thunder and rain, but in the middle was the victim and the predator. The predator was a teen, a girl with an elegant face and sharp eyes filled with amusement, age, and bloodlust as she stared at her prey. The prey? A broken boy broken by his flaw.
She took off her bag and went through her collection of weapons like it was a menu, and when she made her choice she plucked it out of its case and squatted next to her victim. Her hands moved along the blade shedding blood, she didn't cry in pain but looked at her cut hand with amusement and rubbed her blood on the blade. The blade glowed red, ready for its purpose.
The predator flipped the blade, pointed it at the collarbone, and drove it up slowly and deep. The prey grimaced in pain as the blade drove up to his cheek, and at the last moment the predator drove it down and plunged it into the heart, blood splattering against the floor.
The prey took one last breath before going. "Oh, you're not getting away that easy," the predator's voice filled with insanity as she took the soul. "Mother will be ever so pleased." She stood up and sheathed the blade before muttering an incantation and disappearing.
A minute later the door of the apartment came down and armed campers and Gods came through. They then narrowed their eyes at the messy apartment, and searched the apartment. After awhile a shout was heard and everyone hurried to the source. They came to the hallway, and they covered their mouths in horror and dropped their weapons. At the end of the hallway a bloodied corpse was seen, his body covered with cuts, bruises, you name it.
A girl then came forward and fell to her knees, "I'm so sorry."