The skelkrins. Predators from deep space. Creatures of claws, fangs, and unending malice. They swarm across the galaxy, slaying all in their path. Planets burn in their wake. And now they're heading to Earth.Raphael "Riff" Starfire commands the Alien Hunters, a group of scruffy mercenaries. Galactic pest controllers, they mostly handle small critters--aliens that clog up your engine pipes, gnaw…
