Once Lost Lords (Royal Scales Book 1)

A part-time enforcer, all Jay cared about was those closest to him and a job that let him hit people. That was before a betrayal sent him packing. Four years later he’s back, but his former boss thinks he lost his edge. Reduced to proving himself, he's thrown a straightforward task: collect on an overdue debt from some elf.
As if life was ever that simple. With a vampire ex-girlfriend out for blood and a friend caught up in something dangerous, he has his work cut out for him. Jay always thought he was human, but his search for the elf raises questions that threaten his identity.