Dasha. Council Assassins, #9

Dasha has met his mate, and it's a disaster. The man was present when the assassins and the enforcers raided the lab, and he was wearing a lab coat. Dasha has been living with the knowledge that the man he's supposed to spend the rest of his life with is a monster ever since, but it's eating at him, and he doesn't know what to do. Oxford was arrested while he was in that lab looking for his brother.
He's tried to tell the enforcers he had nothing to do with the scientists who worked there, but so far, no one has listened. He managed to escape his cell in the council jail, but he was caught again. And this enforcer finally believes him. When Dasha realizes Ox didn't have anything to do with the lab, he and the other assassins agree to help him find his brother. They have no idea where to start, though, and they might be too late.