'Avengers: Endgame' Spotlights Thanos' Return in New Mini-Trailer

Marvel Studios has unveiled another action-packed mini-trailer teasing the highly-anticipated Avengers: Endgame movie, dropping to mark the launch of ticket preorder. Featuring the return of Thanos, superheroes Thor, Black Widow, Captain America, Iron Man and Bruce Banner gear up for the most epic final battle in the Marvel Cinematic Universe. The remaining Avengers assemble as a unit once again and take the Guardians of the Galaxy's ship, the Benatar, to space to fight Mad Titan. A final teaser...