The searing tale begun in Avengers Annual (1967) #15 concludes here! The traitor stands revealed! But not even both the Avengers and West Coast Avengers are prepared for the scope of the former Avenger's treachery!
After the Avengers and the West Coast Avengers are released from imprisonment, they gather together to figure out who is the traitor. Going over all former members of the team, they decide to contact each one. They do until Quicksilver is left, revealing that he is the traitor. With the help of the Zodiac, Quicksilver fights three separate groups of Avengers but is defeated each time. Finally facing them all together, the Vision appears and shows Quicksilver the nephews he has yet to meet. With a dose of guilt, Quicksilver flees and Hawkeye is left asking if the two teams want to finish up their softball game.