One

Andromeda Jackson was about as normal as the daughter of Poseidon could be. She had two friends, Annabeth and Grover, who she cared about more than anything. She loved her mother, who seemingly understood her in a way that nobody else did. She had an enemy, Luke Castellan, who she felt was her one, true foil. Oh, and don't forget the 80-year-old prophecy about her Sweet Sixteen hanging over her head.

But, when Luke's newest prisoner turns out to be her Mute, long-lost twin brother, Percy, her story would take an unexpected turn, and she couldn't tell if it was for better or for worse.