Stephen Donaldson - The Gap (1-5, epub, mobi)

The Gap Into Conflict: The Real Story (Gap #1)
Angus Thermopyle was an ore pirate and a murderer; even the most disreputable asteroid pilots of Delta Sector stayed locked out of his way. Those who didn't ended up in the lockup--or dead. But when Thermopyle arrived at Mallory's Bar & Sleep with a gorgeous woman by his side the regulars had to take notice. Her name was Morn Hyland, and she had been a police officer--until she met up with Thermopyle.

The Gap Into Vision: Forbidden Knowledge (Gap #2)
Beautiful, brilliant, and dangerous, Morn Hyland is an ex-police officer for the United Mining Companies--and the target of two ruthless, powerful men. One is the charismatic ore-pirate Nick Succorso, who sees Morn as booty wrested from his vicious rival, Angus Thermopyle. thermopyle once made the mistake of underestimating Morn and now he's about to pay the ultimate price. Both men think they can possess her, but Morn is no one's trophy--and no one's pawn.
Meanwhile, withing the borders of Forbidden Space, wait the Amnioin, an alien race capable of horrific atrocities. The Amnion want something unspeakable from humanity--and they will go to unthinkable lengths to get it.

The Gap Into Power: A Dark and Hungry God Arises (Gap #3)
The stage is set of confrontation at Billingate--illegal shipyard, haven for pirates and brigands, where every vice flourishes and every appetite can be sated. Gateway to the alien realm of the Amnion, the shipyard is a clearinghouse for all they require to fulfill their mutagenic plans against humanity.
It is here that the fate of Morn Hyland is to be decided amid a kaleidoscopic whirl of plot and counterplot, treachery and betrayal.

The Gap Into Madness: Chaos and Order (Gap #4)
As the planetoid Thanatos Minor explodes into atoms, a specially-fitted cruiser escapes the mass destruction and hurtles into space only a step ahead of hostile pursuit. On board Trumpet are a handful of bedraggled fugitives from an outlaw world - old enemies suddenly and violently thrown together in a desperate bid for survival. Among this unlikely crew of allies are Morn Hyland, once a UMC cop, now a prisoner to the electrodes implanted in her brain; her son, Davies, "force-grown" to adulthood by the alien Amnion and struggling to understand his true identity; the amoral space buccaneer Nick Succorso, whose most daring act of piracy could be his last; and Angus Thermopyle, unstoppable cyborg struggling to wrest control of his own mind from his UMC programmers.

The Gap Into Ruin: This Day All Gods Die (Gap #5)
As the crew attempts to pursue the pirate ship Soar and her captain, their hopes turn to Angus Thermopyle. Angus, Morn Hyland, and her son, Davies, race home, unaware that Warden Dios and The Dragon are locked in a final confrontation that may alter the fate of humankind forever.