Phantasma by Kaylie Smith — book slip

When Ophelia’s sister vanishes, her only hope is to enter Phantasma, a perilous contest within a haunted mansion, and win a single wish.

The mansion is a labyrinth of demons and temptations, where Ophelia must face nine increasingly dangerous challenges.

As rivals vie for victory, a mysterious stranger named Blackwell offers Ophelia a deal: his guidance through the trials in exchange for ten years of her life.

Despite her better judgment, Ophelia is drawn to Blackwell, whose charm and arrogance mask a dark allure. In Phantasma, losing the game could mean losing her heart.

For fans of A Court of Thorns and Roses and Caraval.