Salt Magic, Skin Magic by Lee Welch

Lord Thornby has been trapped on his father’s isolated Yorkshire estate for a year. There are no bars or chains; he simply can’t leave. His sanity is starting to fray. When industrial magician John Blake arrives to investigate a case of witchcraft, he finds the peculiar, arrogant Thornby as alarming as he is attractive. John soon finds himself caught up in a dark fairytale, where all the rules of magic—and love—are changed.

To set Thornby free, both men must face life-changing truths—and John must accept that the brave, witty man who’s winning his heart may also be about to break it. Can they escape a web of magic that’s as perilous as love?