Ms. Miller, a former New York Times reporter, writes that Mr. Fitzgerald induced her to give what she now realizes was false testimony. By withholding critical information and manipulating her memory as he prepared her to testify, Ms. Miller relates, Mr. Fitzgerald “steered” her “in the wrong direction.”

Ms. Miller’s inaccurate testimony helped Mr. Fitzgerald persuade a Washington, D.C., jury in 2007 to find Mr. Libby, former chief of staff to Vice President Dick Cheney, guilty of obstruction of justice, making a false statement and perjury.

Mr. Fitzgerald’s conduct warrants revisiting not only to set the record straight about Mr. Libby, but also to illustrate the damage that can be done to national security by a special counsel who, discovering no crime, generates through his investigations the alleged offenses he seeks to prosecute.