Former best friends Hanna, Aria, Spencer, and Emily, who lost their best friend and leader, Alison, years ago when she disappeared, find themselves in grave danger when they pursue the truth about Alison.

Thirteen-year-old Theodore Boone, who knows every judge, police officer, and court clerk in the small town of Strattenburg, finds himself involved in a murder trial because of knowledge he might have about a cold-blooded killer.

Zac Baxter travels to Africa after his grandfather is brutally murdered, hoping to learn the truth about his family's dark past and discover why someone was willing to kill his grandfather to learn the family secret.

When Will Halpin transfers from his all-deaf school into a mainstream Pennsylvania high school, he faces discrimination and bullying, but still manages to solve a mystery surrounding the death of a popular football player in his class.

In alternating chapters, ambitious Lady Macbeth tries to bear a son and win the throne of Scotland for her husband, and Albia, their daughter who was banished at birth and raised by three weird sisters, falls in love, learns of her parentage, and seeks to free Scotland from tyranny in this tale based on Shakespeare's Macbeth.