Julia froze, motionless. She tried to move, to talk, but her body was locked tight. She shivered as a network of fine black lines grew up from her foot, slow at first, then with gathering pace. She knew what this was now, had seen it once before. She tried to turn, to run, to beg for help. Trapped in place, screams loud in her head, she died, flesh disintegrating into a cloud of small black particles that collapsed onto the waves like soft rain.