"Queen of the Werewolves!"
Cap and the Falcon travel to a backwoods prison by motorcycle. The Falcon's hoping to fulfil a promise to an old associate, who's currently incarcerated there.
What they find when they arrive, however, is a scene straight out of a horror movie. The inmates have all been become Werewolves. To compound matters, Falc gets captured and is also transformed into a Werewolf. The Falcon-Wolf is set loose, and Cap has to defend himself against his slavering friend.
The pack-mother is a precocious young woman calling herself, Deadly Nightshade. Emphasis on the "Deadly". Her intention is to impress the Yellow Claw enough for him to make her an essential ally.
When the Claw snubs her efforts to be considered an apprentice, Nightshade takes the rejection badly. Nick Fury and S.H.I.E.L.D. agents arrive on the scene, combing the area for the Claw. Nightshade makes the fatalistic decision to end everything and leaps apparently to her death, off the prison tower roof, taking her Werewolves with her in a wave of mass ritual suicide.