Perceiver: The Perceiver Trilogy Book One

Moving to a new town was not on Hattie's to-do list for the summer.
Her arrival in Applewood brings nothing but strange things to her doorstep. A weirdly-bendable boy guards an abandoned orchard. A humorous cactus gives her a bullet. A mysterious monster made of oil stalks those around her.
And nobody can see them but her.
When traveling consultants show up on her doorstep, a chance encounter with the boy named Jack forces them to confront the monsters and their intertwined fates. Worse yet, the lives of the people she loves now hang by a thread.
When her world collides with another, Hattie must make a choice: save herself or save her parents.
Tsava awaits.
Perceiver is the first book in The Perceiver Trilogy, a YA fantasy series with magical creatures and grand adventures.