It took me forever to read Servant of the Underworld, and I don’t know why. It’s great. Aliette de Bodard has created a mystery set in the Mexica (Aztec) Empire in 1480. As a long-lived emperor under whom the Mexica have prospered lies on his deathbed, Acatl, a priest of the dead, finds himself investigating a murder or abduction where his estranged brother is the prime suspect. And rather than making this a straight-up…