James Comey and his memoir are tripping the media light fantastic, though what’s defined that trip so far is its lack of news. Mr. Comey explains the many and varied ways that he does not like President Trump. Mr. Comey explains the many and varied ways that he does like himself. Tell us something we don’t know.

People forget that directors of the Federal Bureau of Investigation—by necessity—are among Washington’s most skilled operators, experts in appearing to answer questions even as they provide pablum. Yet the publicity...