After spending her life with her mentally retarded mother and agoraphobic neighbor, twelve-year-old Heidi sets out from Reno, Nevada, to New York to find out who she is. Living with her mentally disabled mother who only knows just over twenty words, young Heidi has learned to live in her special world until a new word is suddenly used and repeated by her mother; causing Heidi to think it might be a key to a secret past about which she knows so little...

Seventeen-year-old Gwen, who has been living with her grandfather in Manhattan while she attends music school, joins up with another music student to solve the mystery when her grandfather suddenly goes missing

Washed ashore as a baby in tiny Tupelo Landing, North Carolina, Mo LoBeau, now eleven, and her best friend Dale turn detective when the amnesiac Colonel, owner of a café and co-parent of Mo with his cook, Miss Lana, seems implicated in a murder

"In Ontario, Pen is a sixteen-year-old girl who looks like a boy. She's fine with it, but everyone else is uncomfortable--especially her Portuguese immigrant parents and her manipulative neighbor who doesn't want her to find a group of real friends"--

Sixteen-year-old Mila discovers she is not who--or what--she thought she was, which causes her to run from both the CIA and a rogue intelligence group

"Six kindergarteners were taken. Eleven years later, five come back--with no idea of where they've been. No one remembers the sixth victim, Max. Avery, Max's sister, needs to find her brother--dead or alive--and isn't buying this whole memory-loss story"--

Twelve-year-old Rahul Kapoor, an Indian-American boy growing up in small-town Indiana, struggles to come to terms with his identity, including that he may be gay.

After her older sister runs away, sixteen-year-old Caitlin decides that she needs to make a major change in her own life and begins an abusive relationship with a boy who is mysterious, brilliant, and dangerous

"In the distant future, when a new species rules the earth, thirteen-year-old Prince Leo struggles to hide a dangerous and forbidden power he cannot control while trying to unlock the mysteries of his origins"--

Fourteen-year-old Mia, who is trying to lead a normal life as a teenage girl in New York City, is shocked to learn that her father is the Prince of Genovia, a small European principality, and that she is a princess and the heir to the throne