- Winner of the 1999 Edgar award for best young adult mystery
- An American Library Association “Best of the Best: Best 100 YA books of the Past 10 Years) selection, 2005.
- Starred reviews in Booklist, Publishers Weekly, School Library Journal, Voya, and Kliatt
- An ALA Best Book for Young Adults
- An ALA Quick Pick—Top 10
- An ALA Teens’ Top 10 Best Book Pick
- IRA Young Adult Choice
- A Booklist Editor’s Choice
- A Bulletin Blue Ribbon Book
- Winner of the 2001 Garden State (New Jersey) Teen Book Award
- Winner of Black-Eyed Susan Award (Maryland), High School division, 2000-2001
- Honorable Mention “Silver Kiss” in the Golden and Silver Kisses 2002 award program, from the Dutch Stichting CPNB.
- Texas TAYSHAS high school reading list, 2000
- Evergreen (Washington State) Young Adult Book Award list, 2001
- South Carolina Young Adult Book award list, 2000-2001
- Eliot Rosewater Indiana High School Book award list, 2000-2001
- Tennessee Volunteer State Book Award, YA master reading list, 2002-2003
- Pennsylvania Young Adult recommended list, 2000-2001
- South Dakota Young Adult Reading Program list, 2000
- A New York Public Library Best Book for the Teen Age
- A Bank Street College Best Book of the Year
- A Parent’s Guide to Children’s Media selection
Author of And Then There Were Four