Honor Among Thieves — L.R. Stahlberg

Jay Reese had everything under control. Despite the chaotic turn his life had taken, he understood how the game was played. At least he thought he did, until a botched heist is interrupted by a rampaging minotaur. Suddenly the career criminal is thrust into a world of sorcery, mystic artifacts, immortals, and monsters where he will learn just how little he knew about the world around him.