Black ghosts

All the Black Female Black Ghosts were thought to have been wiped out many years ago, but I John Smith had found one and she has a job for his family. He was not sure what the Black Ghosts want me to do and why they want my help. Tattoos on the girls back may lead to untold riches. First we have to beat the raiders they are terrorizing the planets and will stop at nothing to get the riches first. Who is on our side, who can we trust and who is this slave girl Sarah really, and why do the Black ghosts care about her?