How long is the Warrior series?
Warriors (novel series)
The fourth series, Warriors: Omen of the Stars, was released from 2009 to 2012 and consists of six books: The Fourth Apprentice (November 24, 2009), Fading Echoes (March 23, 2010), Night Whispers (November 23, 2010), Sign of the Moon (April 5, 2011), The Forgotten Warrior (November 22, 2011), and The Last Hope (April 3, 2012).[30][31][32][33][34][35] It is a direct continuation of Warriors: Power of Three, wherein Hollyleaf dies and Dovewing replaces her.