Warriors: The Unknown Threat Series Book #1: ShadowClan's Threat

It has been a while since the Clans won the battle against the Dark Forest. ThunderClan is prospering under Bramblestar's leadership and the rest of the Clans have been thriving too. But a strange black liquid is covering ShadowClan's territory, killing and poisoning their prey, and ShadowClan's leader, Blackstar, dec...