Looking for a book set in Ireland, maybe in the same realm as The Hill of The Red Fox which was set in Scotland.

I went to Scotland last year. Stopped in a small book store and asked the owner to recommend a book set in Scotland that was a mystery/adventure style book. He recommended The Hill of The Red Fox. It's a book for the YA crowd but I still found it a fun read as an adult. Looking for something in the mystery/adventure genre set in Ireland. Doesn't have to be YA but I'm also not opposed. Just looking for a fun read. I've read Tana French's The Hunter and In The Woods. I enjoyed The Hunter, but was lukewarm on In The Woods. Take me to Ireland please.