Glyph (1999) is novel by Percival Everett which features a displaced child.

The narrator of Glyph is a 4-year-old boy, Ralph.

By the time he is only 10 months old, Ralph is already reading books on philosophy, science and maths. He refuses to speak but can communicate by writing notes.

After his parents take Ralph to see a child psychologist, the psychologist abducts Ralph and has him removed to a lab where she can study the baby.

There are 2 more abductions in store for Ralph before he is retrieved by his mother.