The scene in her blade shifted. There was a rapid series of images she’d seen before, but she still didn’t understand them: Jason riding into battle on horseback, his eyes gold instead of blue; a woman in an old-fashioned Southern belle dress, standing in an oceanside park with palm trees; a bull with the face of a bearded man, rising out of a river; and two giants in matching yellow togas, hoisting a rope on a pulley system, lifting a large bronze vase out of a pit.
Then came the worst vision: she saw herself with Jason and Percy, standing waist-deep in water at the bottom of a dark circular chamber, like a giant well. Ghostly shapes moved through the water as it rose rapidly. Piper clawed at the walls, trying to escape, but there was nowhere to go. The water reached their chests. Jason was pulled under. Percy stumbled and disappeared.
How could a child of the sea god drown? Piper didn’t know, but she watched herself in the vision, alone and thrashing in the dark, until the water rose over her head.

The Mark of Athena, Chapter IX