WASHINGTON (AP) — Robert Mueller is back.

After a quiet few months in the run-up to the midterm elections, the special counsel's Russia investigation is heating up again with a string of tantalizing new details emerging this week.

None of it answers the central question: Did Donald Trump and his campaign coordinate with Russia to help him win America's 2016 presidential election. But the new evidence does make clear that some in Trump's orbit recognized his Russia connections were a problem — so they lied about them.

Mueller has indicated there are more criminal charges to come.

Here's a look...