Today:
Fresh Air: Mat Johnson, author of Invisible Things: A Novel (One World, $27, 9780593229255).
The Tonight Show with Jimmy Fallon: Elizabeth Olsen, co-author of Hattie Harmony: Worry Detective (Viking Books for Young Readers, $17.99, 9780593351444).
Tomorrow:
Late Show with Stephen Colbert: Ibram X. Kendi, author of Goodnight Racism (Kokila, $18.99, 9780593110515).