Dylan St. James: Omega Concealed

Dylan St. James is an Omega who presents to the world as a Beta, using the cover to help other Omegas escape people who would keep them. Alpha brothers Austin and Seth, working with their Beta partner Cameron, track Omegas taken against their will. When the four meet the pull between them is immediate, and they have to work out who is really protecting whom before more women disappear. Book one of a duet, and it ends on a cliffhanger.