King of Ravens by Clare Sager — book slip

Annon's life in a remote seaside cottage is disrupted when her brother gifts her a mysterious mirror, inviting Drystan, a fae king of the Underworld, into their home.

Bound by a bargain her father made years ago, Annon is whisked away to the perilous unseelie court. There, she must navigate a world of ancient magic and deadly politics, all while resisting Drystan's cold charm.

As she attempts to escape his deadly labyrinth, Annon faces an impossible choice: return to her beloved home or embrace a new life in a world where she might finally belong.

For fans of The Serpent and the Wings of Night and Kingdom of the Wicked.