The Martian Child, David Gerrold, Tom Doherty Associates, 2002, 190 pp
Another book about adoption, recommended to me by my friend Laurie, the sci fi writer. This one is from the viewpoint of the adopting parent. Gerrold turned his experience into a novel and I devoured it in a few hours.
The man is single, gay and a sci fi writer living in the suburbs of Los Angeles. The boy he adopted was 8 years old, abandoned by his mother (who was a drug abuser) and in foster care since he was a year old. He was considered not adoptable because of all his behavior troubles plus he told everyone that he was from Mars.
Despite qualms and self-doubt, David adopted him and made a success of it. Another child saved by love. Good writing and excellent insight into the Martian thing. Apparently it is somewhat common for kids in the foster care system to believe they are from Mars.