Historically, clinical training in psychiatry is biased toward eliciting patients’ verbalization of experience, rather than their mental imagery. Yet powerful and intrusive mental imagery, in the form of flashbacks, is a hallmark of posttraumatic stress disorder, and emotionally significant imagery is now recognized to be common in many other psychiatric disorders (3). Thus, intrusive images of the future, or flash-forwards, commonly accompany suicidality (4). Moreover, some diagnoses are more imagery-prone than others. Compelling mental imagery of the future is strongly associated with bipolar disorder and predicts interepisode mood instability (5). The extension of the bipolar diagnosis toward a spectrum disorder and its common comorbidity with anxiety, substance misuse, and impulse control problems (6) imply a much wider potential significance for imagery in psychopathology than is currently understood.