It seems that
Orson Scott Card is good at writing about warped childhoods. There's
Ender's Game, perhaps his most famous -- the children taken away from a normal life and trained to be soldiers and strategists. There are the parallel works to
Ender's Game,
Ender's Shadow and
Shadow of the Hegemon, which deal with different children who have been subjected to the same regimen. There's his more realistic book
Lost Boys, which creeped me out too much for a second reading, even though I couldn't put it down the first time.
Lost Boys deals with missing children and child molestation, the latter a
particularly difficult subject for me, but the Amazon.com reviews seem to indicate that anyone will be hit hard by this book.
But perhaps the earliest of Card's works on the theme (or maybe not -- I certainly haven't read anywhere near all of his work) is Songmaster (out of print, unfortunately). In this book, it is to the Songhouse that talented children are taken, to learn to sing more powerfully than anywhere else in the galaxy. Only those the Songhouse judges fit hosts can have Songbirds, the pre-pubescent singers who are the cream of the crop the Songhouse produces. It surprises an empire when Mikal, the ruthless emperor of many planets, is judged fit for a Songbird, but after years of finding the perfect child and training him, Ansset goes to Mikal's court.
The Songhouse environment comes through as unusual but warm; the Imperial court is cold and stiff, full of security guards who fondle Ansset's genitals and retainers jockeying for permission. (I find it amusing that every character seems to assume the galaxy-conquering Emperor is sexually involved with his nine-year-old Songbird [which he isn't], even though adult homosexuality in this world seems to be looked down upon as weak and weird.) Emotionally, Mikal becomes a father to Ansset, but even that is torn away.
Ansset survives and becomes a force to be reckoned with in Imperial politics, just as Ender and Bean and their comrades survive and gain great power in their books. It has started to get a little old by the sixth book in the Ender series, but the theme touches so many readers; perhaps because, especially in science fiction fandom, readers feel that their peers or their family or some other force treated them wrong, that they are as unusual, talented yet warped, as Card's characters.
Songmaster is perhaps not as gripping as Ender's Game, but it covers the theme in a more interesting way: the power of song, not war.