Donald J. Trump is running for president again. Donald J. Trump is back on Twitter again. And now a special prosecutor has been appointed to investigate Donald J. Trump again.

In the saga of the Trump investigations, there seem to be recurring rhythms and patterns. Here’s what to know about the latest developments.

Guest: Michael S. Schmidt, a Washington correspondent for The New York Times.

Background reading: 

• The two major criminal investigations involving Mr. Trump examine his role in the lead up to Jan. 6 and his decision to retain sensitive government documents at his home in Florida.
• What is it that makes a special counsel “special”?

For more information on today’s episode, visit 

nytimes.com/thedaily

. Transcripts of each episode will be made available by the next workday.