A Sea Like Glass. The Madness Method, #3

Tarik and Hayli have failed. They and their crew risked everything to thwart an insurgency bent on toppling the Cavnish government, but all for nothing. The monarchy has fallen, the nation is leaderless, and the threat of a world war looms larger than ever.  Heartbroken, Tarik embarks on a perilous voyage to Istia, hoping to secure an alliance that might prevent further chaos. But standing in his way is Rigvar, a powerful mage whose vision for Istia could throw Cavnal into ruin.
And behind the political turmoil ancient powers are stirring, shaking Tarik's grip on reality. The struggle for peace will mean nothing if he cannot win the battle for his own soul. Left behind in Cavnal, Hayli must face her darkest fears to keep Tarik's people safe in a divided and rudderless nation. To make matters worse, a rogue mage emerges who not only looks like Tarik, but truly believes he is the missing Prince-and is desperate to prove it.  But there are other forces in motion that no one ever dreamed of, threatening to unravel everything Hayli and Tarik have sacrificed so much to achieve. When the gods go to war, the world is their battleground, and no one can escape the fight.