Voyage of the Fox Rider - 9

The Mage Alamar has never forgotten the life debt he owes to Farrix, one of the legendary Hidden Ones of Mithgar, who keep to themselves and avoid contact with ordinary humans. So when Farrix’s mate, the Lady Jinnarin, appears on Alamar’s doorstep, he fears the worst.
 
Months ago, Farrix vanished—and Jinnarin has been plagued by nightmares of him being in danger ever since. To find him, Alamar and Jinnarin must embark on a journey across the sea to confront a master of dark magic preparing to open a portal between Mithgar and a destructive Dark God....