Lullaby for the Rain Girl

At age 36, Ben Fall is a man in torment. Overstressed, out of shape, in the middle of a bitter divorce, and carrying a secret that weighs heavily on his psyche, he's convinced he's a failure. He can hardly get out of bed in the morning to make his way to the high school where he teaches English. But suddenly one gray afternoon, a mousy, nondescript new girl appears in his classroom. She seems fascinated by everything he says and does - disturbingly so. Yet, though she gazes obsessively at him and hangs on his every word, she won't even tell him her name... just that she's "The Rain Girl." Who is she? Where does she come from? What does she want?