Now stronger, feistier, and a bit older, Sunny Nwazue, along with her friends from the Leopard Society, travel through worlds, both visible and invisible, to the mysterious town of Osisi, where they fight in a climactic battle to save humanity.

When Fletcher, a blacksmith's apprentice, learns he can summon demons, he travels with his demon to an academy for adepts where he is to train as a Battlemage in the Empire's war against the orcs, but he discovers that all is not as it seems.

Kaz Brekker and his crew have just pulled off a heist so daring even they didn't think they'd survive. But instead of divvying up a fat reward, they're right back to fighting for their lives. Double-crossed and badly weakened, the crew is low on resources, allies, and hope. As powerful forces from around the world descend on Ketterdam to root out the secrets of the dangerous drug known as jurda parem, old rivals and new enemies emerge to challenge...