Firehand

Ross Murdoch was a petty criminal when he first time-traveled. Now he is a hero, about to face a time-traveling band of predatory aliens, the same ones who made his hand a charred ruin. With a small but loyal force, they face a much larger foe. They need a hero. They need Firehand. Can Ross live up to the legend he's created? 5th book in the Time Traders series