Is Ms. Marvel on the front lines of the SECRET INVASION...or is she part of the invasion?!

With S.H.I.E.L.D. convinced she's a Skrull impostor, Ms. Marvel must fight for her identity and her life against her very own Lightning Strike Force! But when the Force has a Ms. Marvel of their own, even Carol can't be sure she's Carol anymore!

There is a Skrull in Lightning Storm's midst. There is a secret truth to the life of Ms. Marvel's lover, William Wagner. And something happens between Ms. Marvel and Wonder Man that can never be undone.