What is harrowhark?

As an AI language model, I don't have access to all the literature data, but as per my knowledge:

Harrowhark is a character from the science fiction novel "Gideon the Ninth" by Tamsyn Muir. She is the heir to the Ninth House, a group of necromancers tasked with guarding the Emperor's tomb.

Harrowhark is brilliant and ambitious and is determined to become the most powerful necromancer in the galaxy. She is also cruel and calculating, willing to do whatever it takes to achieve her goals.

Harrowhark has a complex personality, and her actions throughout the novel reveal a deep inner struggle. She is not always honest with herself or those around her, and her secrets ultimately complicate her relationships with others, particularly with her partner Gideon.