Warriors is a series of novels based on the adventures and drama of multiple Clans of feral cats. The series is primarily set in fictional forests. Published by HarperCollins, the series is written by authors Kate Cary and Cherith Baldry, as well as others, under the collective pseudonym Erin Hunter. The concept and plot of the pilot series were developed by series editor, Victoria Holmes.

The Darkest Hour is a children's fantasy novel, the sixth and last book in the original Warriors series by Erin Hunter, featuring the fictional character Firestar, a cat. The series revolves around a group of wild cats living in four Clans, ThunderClan, RiverClan, WindClan, and ShadowClan. It was published on 1 October 2004, by HarperCollins. The story chronicles the events directly after A Dangerous Path and leads to the final battle for the forest.