Brian Keyes, a reporter, had developed a good understanding of B.D. Harper through his work. He found Harper to be an unobjectionable person, with no particular strengths or flaws that stood out. Harper's personality and character seemed quite dull and unremarkable to Keyes.
Harper's lack of distinctive qualities made him an unmemorable figure in Keyes’ view. The quote illustrates this by describing Harper as someone "there was nothing not to like" but also "nothing much at all," emphasizing his ordinariness and absence of notable traits.