Vanity Fair writer Katherine Eban asked why psychologists were participating in military interrogations at Guantánamo Bay, and she uncovered the alarming story of two C.I.A. contractors who were, in secret, designing torture techniques. Learning how and why took her deep into a world that our military and intelligence agencies would rather keep hidden.

Read her article, "Rorschach and Awe."

Weigh in: Should torture ever be used during interrogations of suspected terrorists?