The Freudian view seemed to be that people consist of Ids, ego's and superego's. People are supposedly also inhabited by something called a subconscious, a mysterious entity with a tendency to think naughty thoughts and keep them a secret from one's conscious self. When this naughty subconscious takes over and controls one's actions - without permission - people become neurotic. If the patient lies on a couch and talks, and a psychiatrist listens, the subconscious might be tricked into revealing itself. Once enticed out into the open by a therapist, the subconscious supposedly looses its power to cause neurosis.

Boston landlady Harriet Sutton discovers a note about a conspiracy to murder someone - a note that must have come from one of her tenants. When a tenant is murdered, she asks psychiatrist-sleuth Dr Basil Willing to investigate. Her son, a Vietnam veteran whom the police consider a victim of combat fatigue who may be capable of anything, is under suspicion. And as the mystery unfolds, Harriet Sutton tries desperately to prove them wrong.

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