Ellen Oh (née Ha) is a Korean-American author, and founding member and CEO of the non-profit We Need Diverse Books.

[1][2] She is the author of young adult and middle grade novels including the Prophecy trilogy, also known as the Dragon King Chronicles, a series of fantasy, young adult novels based on Korean folklore.

[3] She began to write seriously after she had children, prompted by her struggle to find books that included representation for her kids.

[3] The series, known both as the Prophecy trilogy and the Dragon King Chronicles, draws from Korean folklore.

The book follows a young child, Harper, and her family as they move into a seemingly haunted house.