The end of the stars draws near. Three must become four to battle the darkness that lasts forever. . . .

After countless moons of treachery, Tigerstar's Dark Forest apprentices are ready to lay siege upon the warrior Clans. As Jayfeather, Dovewing, and Lionblaze prepare to lead their Clanmates into battle, they await the arrival of the mysterious fourth warrior who is prophesied to help lead the Clans to glory.

The darkest hour the Clans have ever faced has dawned. Hopes will be shattered and heroes will rise as the warriors fight for their very survival.

This enhanced edition contains the full text of the novel, plus the following bonus content:

• Three exclusive videos from Erin Hunter about writing Warriors over the years; the heroics of Firestar; and story ideas that got left on the cutting room floor
• Confidential notes from Erin Hunter including a behind-the-scenes look at how she chose which cats would die, and the truth about Midnight
• A brand new interactive game only available in this enhanced ebook
• A sneak peek at Warriors Super Edition: Yellowfang's Secret