Some Assembly Required

As the Avengers make improvements to their mansion, lilttle do they know that they have been betrayed to the New Masters of Evil by someone they trust most. How will our heroes stand up against the reunited Masters and their new overlord, the Crimson Cowl? Featuring the first appearance of Ultron! Featured Issue: Avengers #54 Writer: Roy Thomas Penciller: John Buscema Inker: George Tuska Letterer: Art Simek