A forbidden romance, because Gregor is Felix' professor and also Gregor has a secret sideline job. He wants to be anonymous and is still grieving from his past. Felix is not what he expected and after coming to his rescue he just can't stay away.  There is turmoil, Gregor is trying to keep himself away from feelings and Felix is falling fast and wants more. There is a light D/s vibe, but this wasn't strong. The story mainly revolves around these two but there are a few extra characters. I never fully trusted Felix' friend, Mark. I felt I needed a bit more depth to figure out if he was genuinely concerned about Felix or jealous. Gregor never did meet him when he was with Felix so the stories told by Mark remained one sided. The epilogue leaves a HFN, with a slight feeling of uncertainty as location and jobs change and only a loose plan is discussed. I received an advance review copy for free, and I am leaving this review voluntarily