"His body flew helmet first into the rock. He felt an intense heat on his back and a vibration of the asteroid surface on his chest. He pulled his head from the small crevice it had been forced into, squinting through the hairline crack in his visor. The O'Brien must have bumped into the surface. For a brief second, he was relieved. Surely such a collision would postpone the tunnel work. But when he turned to survey the damage, his relief evaporated in an instant. The O'Brien was mangled, split in half and dotted with the bubbling haze of black light. And behind it, cruising lackadaisically towards them, shining at the front with a malicious glow, was the triangular craft of the Roamers."
(From "The Asteroid")
"Alone" is a collection of science-fiction short stories varying from 4 to 11 parts each. The plots range from asteroids and aliens all the way to time travel and urban commutes. In short, "Alone" has a little bit of everything. What persists throughout, however, is the theme of insurmountable odds and facing them, you guessed it, alone.