Episode 493 Guests: Adam Schiff, Bob Costas, John Avlon, Zerlina Maxwell, Grover Norquist. Details Casts Title Episode 493 Genres Comedy Talk Release Date 2019-04-26 Episode Runtime 01 Hours 00 Minutes Season Number 17 Episode Number 13 Production Companies Bill Maher Productions, Brillstein Entertainment Partners, Brad Grey Television Bill Maher Self - Host