Harbinger of the Storm — Aliette De Bodard

Death, magic and intrigue in this hotly-anticipated follow-up to Servant of the Underworld. A sumptuously-detailed Aztec world, which will appeal to fans of magical fantasy, historical drama, political intrigue and murder mysteries.

THE AZTEC EMPIRE TEETERS ON THE BRINK OF EXTINCTION.
As the political infighting starts within the imperial court, Acatl, High Priest for the Dead, makes a macabre discovery in the palace: a high-ranking nobleman has been torn to pieces by an invocation - and it looks like the summoner belongs to the court itself...