Warriors: A Starless Clan (Series 8)

"The dawn of a new age is upon the warrior Clans, but when tragedy strikes RiverClan, one young medicine cat must use her gift to prevent the Clans' newfound peace from descending into chaos"-- Provided by publisher.

"In a leaderless RiverClan, medicine cat apprentice Frostpaw is desperate to guide her Clanmates down the right path--while Tigerstar watches their every move. Within ShadowClan and ThunderClan, the changes to the warrior code stretch tempers to the tipping point, where one wrong move could prove that peace among the Clans can never last for long."--

While Frostpaw takes refuge in ShadowClan as Splashtail seizes control of her home, Nightheart returns to ThunderClan and to a complicated reunion with his mate Sunbeam whose efforts to fit in as ThunderClan's newest member are hampered by her treacherous mother.