The Court of Broken Knives, Smith Spark's first novel and the first in the
Empires of Dust trilogy, was released in 2017. Focused on four protagonists, the story is a grimdark fantasy about an attempt to overthrow the Sekemleth Empire. It was released to positive critical reception, with
Kirkus magazine stating that it should "appeal to grimdark fans looking for the extreme edge", but that "others may well find it nasty, brutish, and not short enough". The sequel,
The Tower of Living and Dying, was released in 2018. The previous protagonist, Marith Altrersyr, becomes king and leaves behind a "trail of violent death". A review in
Publishers Weekly states that Smith Spark "fascinates and entertains", with no sign of "middle-book sag". The concluding novel in the "blood-spattered" trilogy,
The House of Sacrifice, was released in 2019. In 2023, Smith Spark published
A Woman of the Sword. Set in the same world as the
Empires of Dust, the novel is character-led, focusing more on "grunt" characters, including from a feminist perspective and addressing
PTSD and the trials of motherhood. A review in
Grimdark magazine stated that the book "hurts to read", but is "unputdownable at times". Also released in 2023 was the novel
A Sword of Bronze and Ashes, about a retired warrior, Kanda, who is now a wife and mother living peacefully until ancient foes return and threaten the agrarian existence of herself and her family. It was described by Liz Rourke of
Locus Magazine as a "peculiar, ambitious novel" that recalls "oral epic poetry" and is reminiscent of the
Táins. ==Personal life==