Summary:

Rachel is married to passive Leon who is utterly dependent on her care and organizational skills. They live in a vast, blanc-mange of a suburb where Rachel constantly looses her way while driving home from work. One night, she seeks direction from Wilkes. A strange recluse, he is obsessed with his teenage memory of the lost "girl on the bus" and leads a support group for agoraphobics.

Through contact with Wilkes, Leon gradually grows more independent and finds himself a job. Rachel becomes obsessed with the search for the meaning of "Harry," a mystery man who recurs in her husband's dreams and begins to take over her thoughts. She consults a psychologist, Alex Silver, who soon has Rachel enrolled in a study with two other women. Silver uses dream-deprivation with the goal of enhancing insight about her marriage, her life, and her friends.

Cameo appearances of three depressive, mid-life siblings, Dick, Jane, and Sally, with their dog, Spot, and cat, Puff, emphasize that life in modern suburbia can be a pathology in itself. In Jane, Wilkes finds his lost girl on the bus. Rachel dumps Leon and finds happiness with the agoraphobic developer of the aptly named "Arcadia Centre," where expense, space, light, greenery, and intimacy are employed unstintingly to create a non-pathogenic space for human collectivity.

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