Joan Rivers fills in for Leonard Lopate! She talks with Henry Bushkin about his time as Johnny Carson’s lawyer and confidant. Margie Stern describes her work helping underprivileged children. Adrian Levy tells the story of what happened inside Mumbai’s Taj Hotel during the 68-hour siege in November 2008. And Joan Rivers will trade notes with comedians Deon Cole, Billy Eichner, and Reza Farahan.