The Keys — Olena Kryshtopa

The Keys is a young-adult fantasy novel by Olena Kryshtopa. The protagonist discovers that a set of antique keys opens doors not only to rooms but to other realities, each hiding its own dangers and riddles.

Kryshtopa creates an engaging world where magic lurks beneath the everyday and the heroine's coming of age is inseparable from mastering secret knowledge. The novel combines a dynamic plot with themes of responsibility and choice.