Mat Johnson and I have been friends since we published our first books fifteen years ago. In that time we’ve spent an untold number of hours bullshitting about writing, parenting, and sundry nonsense. Mat’s new novel, Loving Day—which will be released by Spiegel & Grau on May 26—is the story of a mixed-race comic book artist who returns from Wales to his native Philadelphia to discover a daughter he never knew he’d fathered, a mixed-race cult that hopes to recruit him, and a pair of ghosts haunting his father’s home. Our conversation appears below.