shrugged and tapped the empty implement on a much-tortured edge of his desk: "Lots of speculation around, but nothing definite. Some say it's a problem with face recognition. You heard of prosopagnosia? Patients fail to identify their nearest and dearest, even though they react emotionally when they see them. Capgras is the mirror image, I guess: a failure to react emotionally to familiar faces. But guess is what we have all been doing in the last, oh, eight decades." - He concluded with undisguised disgust. "I need help with this client, Milton," - I interjected - "and you are not helping me at all." He chuckled sarcastically: "How often do I hear it from my patients?" "She is not paranoid, you know. Her mind is sharp and crystal-clear and balanced." He nodded wearily: "That's what confounds us with this syndrome. The patients are 'normal' by any definition of this word that you care to adopt. They are only convinced that family members, friends, even neighbors are being substituted for - and, of course, they are not." He crouched next to my seat: "Soon, she will begin to doubt you and then herself. Next time she catches her own reflection in a mirror or a window, she will start to question her own identity. She will insist that she has been replaced by an entity from outer space or something. She is bad news. The literature describes the case of a woman who flew into jealous rages at the sight of her own reflection because she thought it was another woman trying to seduce her husband." Milton was evidently agitated, the first I have seen him this way. As my teacher and mentor, he kept a stiff upper lip in the face of the most outlandish disorders and the most all-pervasive ignorance. And in the face of our budding, dead end love. "What do you advise me to do?" - I mumbled almost inaudibly. "If she refuses anti-psychotic medication, bail out. Commit her. She is a danger both to herself and to