William King
Farseer

Once rich and famous, a string of bad luck has brought Rogue Trader Janus Darke to the brink of ruin. Dreaming of past glories, the last thing he wants is to accept a commission from two mysterious strangers.
Warhammer 40k
novel

Also in:
The Eldar
Paths of the Eldar
Alien Invasion: the Xenos Digital Collection