Do No Harm - The Omega Auction Chronicles, #20

Wolf-shifter Omega Eloy Cramer was no stranger to having the odds stacked against him. After surviving a kidnapping that left his Alpha dead at his feet, he planned a future as a nurse, determined to help the sick and injured. When his patient took a turn for the worse, Eloy settled into research mode, determined to save him. An elusive story on the internet offered a surprising - and untested - solution, but Eloy would have to risk everything - even his future - to save the Alpha he's come to view as his own.
But even if the unproven treatment works, can they overcome the differences born of belonging to two different species?