What does ""And then some," mean?
Judd realized he had forgotten about it. "Of course," he said quickly. He turned to Angeli. "I think we've covered everything.“

"And then some," Angeli agreed. "You're sure you don't want..." He indicated his revolver.

Question

What does ""And then some," mean?
Judd realized he had forgotten about it. "Of course," he said quickly. He turned to Angeli. "I think we've covered everything.“

"And then some," Angeli agreed. "You're sure you don't want..." He indicated his revolver.

Answer

It's like an exaggeration. Its like saying, "Everything and more". Everything covers it.. But the word "more" is included for emphasis, and that is also what is happening here.

"I think we've covered everything, and then some". You can consider the phrase, "and then some" to mean "more" if it helps. Its only for emphasis to show that they really did cover everything :)