Warriors: A Shadow in RiverClan (Full Color Adventure) PinterestTsyk , ,. The warrior cats leap off the page in their first ever original full colour adventurea stand alone graphic novel set in the wild world of Erin Hunters #1 bestselling Warriors series. When RiverClan fell under the rule of the vicious Tigerstar, Feathertail barely escaped with her life. Now RiverClan is trying to rebuild in unity and peaceeven if Feathertail isnt ready to forgive her Clanmates. But when RiverClan takes in a rogue cat named Sasha and her two kits, Feathertail must find a way to escape the shadows of the past if she is to be a part of her Clans future. Set after the events of Warriors: The Prophecies Begin, this action packed, stand alone adventure is perfect for longtime Erin Hunter fans and new readers alike.