From Brian McClellan, author of the Powder Mage Trilogy, comes this epic second installment in the Glass Immortals series, where magic runs scarce, tensions run high, and world-ending ruin lurks in the shadows of reality…

The Ossan Empire is on the verge of collapse, the cindersand that powers its godglass magic running dry–and war is at its doorstep. Demir Grappo has grown disillusioned with the endless battle against Grent. Idrian is losing his grip on reality as his Ironhorns are being hunted by a flying glassdancer known as the Shrike. Kizzie is caught in the midst of guild-family politics as the city’s people and its rulers are at each other’s throats, ready to descend into a bloody civil war. And shapeshifting eldritch monsters walk the city in human form, their intentions unknown.

Into this powder keg, foreign knights begin appearing on the streets of Ossa and across the forests of the northern provinces as if out of thin air, and Thessa catches the eye of a mysterious warlord with one use for her siliceering skills: rebuilding her stolen phoenix channel, the only thing capable of revitalizing spent godglass–and fueling an invasion the likes of which the Ossan Empire has never seen.

It will take strength, cunning, and every scrap of godglass Kizzie, Thessa, Demir, and Idrian can get their hands on to unravel this plot and keep the threat at bay. But what they discover may mean the end of everything they’ve come to know…