Sigma

In the world of Alphas, Betas and Omegas, there is another classification that is so rare, their numbers are only in the double digits. These types, have the aura and scent of an Alpha, but are able to breed like an Omega. They can be impregnated by either an Alpha, a Beta or an Omega. Sigmas. John learns that being a Sigma is hard to hide from the Holmes brothers. A/N: SLASH!