The electric buzz in their tips sputtered for an angry moment, close enough that Tally felt the heat on both cheeks, and then the arrows fizzled in frustration.

Her eyes were still locked on David, and even through the sneak suit she saw his jaw drop open, a small, amazed sound carrying across the water.

She let out a sharp laugh.

His voice was shaking. "What have they done to you now, Tally?"

"They made me see," she said

He shook his head sadly, then pushed Shay into the river.

She fell forward limply, smacking the water face-first and hard. David whirled around on his board, kicking up a spray as he bolted away. The two archers zoomed out from the trees and followed, boards roaring to life.

"Shay!" Tally cried, but the unmoving body was already slipping under, dragged down by the weight of crash bracelets and soaked clothing. Shay's infrared colors began to change in the cold water, hands fading from bright yellow to orange. The fast current carried her under Tally, who threw the spent arrows aside, spun on one heel, and dove into the freezing river.

A few panicked strokes brought her up beside the dimly glowing form, and she reached out to grab Shay's hair, yanking her head out of the water. Flash tattoos hardly moved on the pale face, but then Shay shuddered and emptied her lungs with a sudden cough.

"Shay-la!" Tally twisted in the water, getting a better grip.

Shay waved her arms weakly, then coughed up more water. But her flash tattoos were gradually coming back to life, spinning faster as her heartbeat strengthened. Her face glowed brighter in infrared as flowing blood began to warm it back up.

Tally shifted her grip, struggling to keep both their heads above water, signaling with her crash bracelet. Her borrowed board responded with a magnetic tug, on its way.