The fifth novel in the bestselling and award-winning Graceling Realm series focuses on Hava
Queen Bitterblue's spy and her harrowing journey back to Monsea after the events of 2021's
Winterkeep. In the immediate aftermath of the events of Winterkeep Bitterblue and her
entourage begin the journey back to Monsea with the only copies of the formulas for the
zilphium weapon. Bitterblue must decide what she will do with her world-shaping power. But
before they've even made it halfway home storms drive their ship off course and then they
wreck in the ice far north of the Royal Continent. The survivors must make a harrowing trek
across the ice in order to make it back to Monsea. Seasparrow is told entirely from the point
of view of Hava Bitterblue's personal spy and secret half sister. And while Bitterblue
grapples with how to carry the responsibility of a weapon of mass destruction Hava must decide
what she will do with herself in the new world Bitterblue will make.