However, her books often incorporate elements of other genres, such as:
* Mystery: Many of her books feature puzzles and secrets for characters to unravel.
* Science fiction: Some of her novels delve into themes of time travel, alternate realities, and genetic manipulation.
* Thriller: Her stories frequently involve suspense, danger, and high stakes for the characters.
While she's known for her historical fiction, she also dabbles in contemporary fiction, with books like "The Shadow Children" series taking place in a dystopian future.
So, while historical fiction is her core genre, Haddix's work often blends elements of other genres to create compelling and engaging stories.