Back in the actual story, Newt found himself cornered in a dead end. It looked like it was all over for our stalwart hero, but then, Dumbledore suddenly Apparated in. He was wearing a kimono because it turns out Dumbledore has been Japanese all along and it just hasn't been mentioned. This is canon now.
"Banzai!" cried Dumbledore, driving Vinda off with his magical katana.
"What are you doing here, sir?" asked Newt.
"I should think that would be self-evident," Dumbledore answered. "Theseus and I came here to rescue you."
"But how did you know something went wrong with our mission?"
"When you were taken from the lost city," said Dumbledore, "someone was left behind, someone you may not even remember was there."
"What are you talking about?" asked Newt. If someone besides himself, Tina, and Jacob had been on their epic quest, it was new to him.
Dumbledore just smiled and held up his hand. Standing there was Pickett!