Freyaverse

The Hugo Award-winning author of numerous best-sellers, Charles Stross crafts tales that push the limits of the genre. In Saturn's Children, Freya is an obsolete android concubine in a society where humans haven't existed for hundreds of years. A rigid caste system keeps the Aristos, a vindictive group of humanoids, well in control of the lower, slave-chipped classes. So when Freya offends one particularly nasty Aristo, she's forced to take a dangerous courier job off-planet.

Krina Alizond is a metahuman in a universe where the last natural humans became extinct five thousand years ago. When her sister goes missing she embarks on a daring voyage across the star systems to find her, travelling to her last known location - the mysterious water-world of Shin-Tethys. In a universe with no faster-than-light travel that's a dangerous journey, made all the more perilous by the arrival of an assassin on Krina's tail, by the 'privateers' chasing her sister's life insurance policy and by growing signs that the disappearance is linked to one of the biggest financial scams in the known universe. This is set in the same universe as Saturn's Children, 5000 years later.