This is book 10 of the Eternal Flames Maddox series, you should read Eternal Flames 1-14 and book 1-9 of Eternal Flames Maddox before this book.
 
Unwilling to be his mates dirty little secret any longer, Sutton walks away, telling Casimir he's done. Casimir refuses to believe that Sutton could just leave him like that and thinks Sut only needs a few days to cool off. However when reality sets in Casimir realizes he has made a terrible mistake, when Sutton refuses to talk to him or even look in his direction.
 
When Sutton goes out on a rescue call to a local mine there is a cave in which leaves Sutton trapped with four other men in desperate need of medical attention. Casimir practically goes insane trying to get his man out alive. When the threat of losing Sutton for good hits Casimir, he promises not only to himself but to his mate, that he will do whatever he has to do to make things up to Sutton and win him back. He can only hope that if Sutton survives, that he will be willing to give Casimir one more chance, because the alternative is just too devastating to consider.