Krampus to the Rescue
This book can be downloaded and read in iBooks on your Mac or iOS device.
When Jack Frost appears at Krampus' house asking for help to save Santa, Krampus knows with his arch-enemy gone, Christmas could be his for the taking. But Jack is willing to sweeten the deal, so Krampus goes to help Jack on his mission.
What they find is the Elves running amok in Christmas Town and Mrs. Claus held prisoner. Racing against time, Krampus must face an even darker energy to rescue Santa.