Son of Bitter Glass

The glasshouse was built for Prince Isbrand's protection. It is good and will keep out the curse. But the glasshouse cannot keep out the Witch.
Eira does not remember her own mother's death, but she remembers the day Prince Isbrand's mother died-for Eira loves her best friend as much as any person can love another. On the day Isbrand's mother was murdered by the Snow Queen, her best friend was cursed-along with all the kingdom of Ravenia-to a slow and icy doom. But Isbrand's curse is special, and to save him from the fate his mother suffered, his father, the king, imprisons him in a glasshouse and searches far and wide for ways to save his son.
Isbrand has always loved Eira, but now that he lives under the Snow Queen's curse, he finds himself fated to marry another. Eira is stuck living at his side in the glasshouse where her fate is tied to his own, trying to protect him from the Witch, who calls to Isbrand, tempting him, even within the safety of the glasshouse. And as the curse's deadline draws near, no plan of the king's-or Isbrand's love for Eira-can keep the Snow Queen from stealing him away.
Left desperate and hopeless, Eira must set off on an impossible journey into the frozen north to save Isbrand. In a world of old magic, fae tricksters, and creatures out of time, it just might be enduring friendship and true love that save a kingdom destined for destruction.