Jim Mitchell and Bruce Jessen were military retirees and psychologists, on the lookout for business opportunities. They found an excellent customer in the Central Intelligence Agency, where in 2002 they became the architects of the most important interrogation program in the history of American counterterrorism. They had never carried out a real interrogation, only mock sessions in the military training they had overseen. They had no relevant scholarship; their Ph.D. dissertations were on high blood pressure and family therapy. They had no language skills and no expertise on Al Qaeda. But they had psychology credentials. Seven months after President Obama ordered the C.I.A. interrogation program closed, its fallout still commands attention. In the next few weeks, Attorney General Eric H. Holder Jr. is expected to decide whether to begin a criminal torture investigation, in which the psychologists' role is likely to come under scrutiny. The Justice Department ethics office is expected to complete a report on the lawyers who pronounced the methods legal. And the C.I.A. will soon release a highly critical 2004 report on the program by the agency's inspector general. The psychologists' ... fall from official grace has been as swift as their rise in 2002. With a possible criminal inquiry looming, Dr. Mitchell and Dr. Jessen have retained a well-known defense lawyer, Henry F. Schuelke III. Mr. Schuelke said they would not comment for this article.