Castle of Dusk and Shadows

She'll do anything to save her family-even marry a fae and face the dead.
Years ago, Elle Blackford's parents made a desperate deal with the fae kingdom of Ashwood. While her mother and sisters reconciled themselves to a future among dangerous immortals, Elle and her father studied forbidden magic, hoping to find a loophole.
Until Elle's father dies, forcing Elle's sister to marry Prince Fitz, heir of Ashwood.
But Elle has a plan to change their fate. For she knows that ghosts wander Ashwood Forest until the royal family sends them into the afterlife. Ghosts that can be returned to life. And she's determined to save her father from his premature death.
All she needs is powerful magic-magic Prince Fitz possesses.
Taking her sister's place, Elle marries Prince Fitz to steal his power. But in a world of bloodthirsty fae and vengeful ghosts, being a mortal comes with constant risks. As Elle navigates a kingdom of monsters and tragic secrets, she realizes she might not survive to save her family.
And the key to her salvation might be her arrogant, cold husband-the one she'd planned to rob and abandon. If only she can trust him.