Doormaker: Rock Heaven (Book 1) by Jamie Thornton

From New York Times and USA Today bestselling author Jamie Thornton.

Three worlds are falling apart…but making portals is forbidden. Can an untrained Doormaker save her family, and Earth, in time?

Since before Maella can remember, one family rule has shaped her life: never open a door. Maella comes from a family of doormakers—people who unleash otherworldly violence when they open something even as simple as a cabinet door.

But when Maella is forced to open a portal she discovers worlds of nightmarish flying monsters, mystical drug deals, political prisoners, religious cults, and a terrifying prediction: Maella will die upon opening her seventh door. In order to survive, Maella must uncover her family’s secrets, all while hiding her identity and outrunning the prediction of her death.

*Three worlds. One rule. She must never open a door.*