The Tonight Show Starring Jimmy Fallon Season 5 Queen Latifah, Freddie Highmore, Sam Smith Season 5, episode 38 Queen Latifah, Freddie Highmore, Sam Smith December 1, 2017 45 min Previous episode Kumail Nanjiani, Kristaps Porzingis, Miguel Next episode Keegan-Michael Key, Claire Foy, J.J. Watt, St. Vincent