AUSTIN, Tex. — When Jordan Peele took the stage to present the world premiere of his new horror film, “Us,” at South by Southwest, he had jokes.

“What if I showed four episodes of ‘This Is Us’ in a row, with no explanation?” he asked. And he gave a shout-out to another film that brought him to the festival three years ago. “If you haven’t seen ‘Keanu,’ go see it. It’s a must-see.”

But back to “Us,” the follow-up to Peele’s Oscar-winning, culture-galvanizing “Get Out.” Expectations have been high for “Us” since the trailer dropped on Christmas Day and raised questions around the web. What’s up with the family that seems to be terrorized by creepy doppelgängers? Why the scissors? How much does the 1995 Luniz track “I Got 5 on It” really factor in?