Cassie Lang will return in "Avengers: Doomsday." Kathryn Newton announced on Instagram on Friday that she is one of the, let's face it, half of SAG-AFTRA's membership who will be in Marvel's next big superhero extravaganza. The actress, last seen in "Ant-Man and the Wasp: Quantumania" is back to help the MCU gang save the [...]