Sally A. Laughlin 
Uncharted Land Between [EPUB ebook] 

After friends of Mac and Kess are thrown into another dimension, they embark on a quest to find and rescue them.
Kess is thrown into the Land Between, and quickly finds out that pure magic has a bad habit of going awry in this extraordinary world held together by magic and technology.
Meanwhile, Mac finds himself in a dimension he’s quite familiar with – Earth. In his search for his friends, he discovers that a malevolent demon from Mystovia has been pulled into Earth’s dimension.
Racing against time, can they find their friends – and stop the demon that is thirsting for a kill?