Invincible Vol. 9

Collects INVINCIBLE #42-47! Allen the Alien returns to Earth as directed by the Coalition of Planets -- he 's come to gather information from Mark about his father -- the Viltrumite Traitor. Meanwhile, the Viltrumites have come to Earth to check up on Mark 's progress as the reluctant Viltrumite Agent of Earth. Also: There are fights.