King Of Beasts (Twin Crowns Book 5), Catherine Doyle

A FROZEN HEART … Deep in the mountains of a snow-swept kingdom, an ancient beast is stirring. When a beautiful young wrangler arrives to try and tame it, she is not expecting to tame the beast that lives inside the king too. But sometimes, all it takes is an unexpected spark to melt even the iciest of hearts … This standalone novel from the stunning YA romantasy world of Twin Crowns is filled with magic, tantalizing romance and explosive action.