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The action in this science fiction novel takes place in New York City. Many of the places will be familiar to people who live there and they are familiar enough that visitors will be able to recognize them also.  Stephen is an invisible boy who lives by himself in an apartment building.  His mother's father put a curse on Stephen's mother to make her children invisible. Stephen's father lives in California and comes to visit him but Stephen's invisibility is too much for his father to live with. 
Elizabeth, her brother Laurie, and their mother move into the neighboring apartment from the midwest where Laurie was beat up when he came out as a gay teenager. 
The story is told in alternating chapters by Stephen and Elizabeth.  That way you get to see the action unfold from both of their viewpoints. 

New Orleans is the setting for this young adult science fiction book. Although the characters in the book are fictional, many places in the setting are recognizable in modern New Orleans and would be an interesting book to read on a trip there.  It is also a book that could be used during a unit on bullying.  The website: http://www.sherrilynkenyon.com/book/inferno/ even has a letter to a bully.
Nick Goutier is the son of an evil Malachi demon and a mortal who has friends, some hundreds of years old and are related to ancient gods, that watch out for him as he matures. He has many of the same issues as many sixteen-year-old students do today, only magnified because of his heritage.
This book is part of the Chronicles of Nick series and the ending sets the scene for the next book with a cliffhanger.