Knocking on Heaven's Door
#3, The Death Chronicles
J.E. Taylor & William F. Houle
This book can be downloaded and read in iBooks on your Mac or iOS device.
As a senior in high school, Nick Ramsay should be focusing on his college choices, but instead, he's dealing with a tear between his world and Purgatory. Leviathan and a dozen demons are running amok in central Florida and Nick must herd them back into the underworld before Heaven opens its gates and sends down a pack of angry angels to clean up the mess.