Aliens: Nightmare Asylum, written by Steve Perry, is a novelization of the second Aliens comic book series. It was published in April 1, 1993. Nightmare Asylum is the second novel in the "Book" trilogy, preceded by Aliens: Earth Hive and concluding with The Female War.
Wilks, Billie, and Bueller were the last survivors of a devastating assault on the aliens' home planet. But their return to the solar system made them refugees once more, fleeing Earth and its alien infestation in a desperate attempt to stay alive. Now in an otherwise unmanned military transport, they hurtle through space. Destination: Unknown.
Little do they know the cargo they carry with them is a legacy of death that they will ultimately have to face. Nor do they know they head toward a remote colony and military outpost. This pocket of humanity at the very edges of space is at the mercy of a general named Spears with an agenda all his own. Now Billie, Wilks, and Bueller face a new nightmare, and it is nothing they could ever have imagined: a gift of madness from an alien world, an unbalanced mind and the experiences of a mysterious pilot named Lieutenant Ellen Ripley.