Andrea caught a glimpse of his big shoulder turning, the fletching of a long-shafted arrow rotating into view as the kid went down. And behind his broad back bulked the slavers' triceratops. A figure on the dinosaur reached into a quiver to draw out another arrow.

Andrea's foot caught on something.

The closer triceratops snorted and a horn passed just over her head.

Andrea found her footing, gritted her teeth against the urge to look behind her, and ...