Erin Hunter 
Warriors #4: Rising Storm 

The fourth book in Erin Hunters #1 nationally bestselling Warriors series Join the legion of fans who have made Erin Hunters Warriors series a bestselling phenomenon. More thrilling adventures, epic action, and fierce warrior cats await in Warriors #4: Rising Storm.Firehearts traitorous enemy Tigerclaw has been vanquished and exiled from Thunder Clanbut Fireheart cant shake the feeling that he is lurking in the forest, waiting for a chance to strike.In the heat of a blazing summer, Fireheart struggles to handle sinister omens, an apprentice with a shocking secret, and a devastated Clan leader who is a shell of her former self. And as the forest gets hotter and hotter, every cat braces for the coming storm.