Having read James Comey’s and James Clapper’s book—both ethical men dismissed by Donald Trump for lack of loyalty—I can see how Andrew McCabe’s book is part of a pattern of values clarification on the part of government servants who *thought* they shared a common set of beliefs and morals with others who have chosen government service. McCabe’s book traces his history with the FBI, describing how he was trained and how agents investigate, interview, and collect evidence. In a world increasingly skeptical of facts, or even that such a thing exists, the FBI’s fact-based methods are confronted by conspiracy theories and political backbiting that tends to negate the safeguards they thought they had put in place. McCabe makes this point and often expresses his frustration at working in an environment in which the President himself is the chief conspiracy theorist. ‘The Threat’ deals with so much more than the Trump Administration and is worth a read by anyone interested in investigation in the age of anti-terrorism. His description of the Boston Marathon bombing in particular is enlightening. I finished with great admiration for all those who dedicate their careers to trying to uphold the Constitution and protect Americans.