Guests: Jonathan Dienst, Tim O'Brien,  Karen Friedman Agnifilo, Andrew Weissmann, Manuel Oliver, Charles Blow The unnamed witness for the Trump grand jury is revealed, and the man who ran The National Enquirer goes under oath. Tonight: inquiring minds want to know, what does David Pecker's testimony mean for the timing of a possible Trump indictment? Then, Charles Blow on his time in Waco where the disgraced ex-president's campaign rally turned darker than ever. Then, the desperately sad, predictable response to yet another nightmare school shooting, this time in Tennessee.