THE EERIE GREEN GLOW WAS THE EXACT COLOR THAT HOLLYWOOD USES TO DEPICT SOMETHING RADIOACTIVE. The light hung in the black depths of the lake, like a star in outer space. It was after midnight on a cloudy night with a new moon, so there was no horizon, making it nearly impossible to tell up from down. The effect was disorienting. Our trolling motor whirred softly, drawing us into casting range—into orbit.