Three children have disappeared in Mexico City. The only clue the police have is that the cases are related, when a few days after the kidnappings, their families receive a macabre gift: a bag with the boys' bones and bloody clothes. No one suspects that Sergio Mendhoza, a thirteen-year-old, is the only one able to solve this mystery.

El crimen perfecto ... un testigo sin rostro ... y sólo Theo sabe la verdad ... In the small city of Strattenburg there are many lawyers, and thirteen-year-old Theo Boone thinks he is one of them, but his inside knowledge of the justice system means trouble when a cold-blooded killer is about to go free and only Theo can stop him. Thirteen-year-old Theodore Boone has always dreamed of being a great trial lawyer someday, but a sensational murder...

Sherlock Holmes's trusted assistants, a band of loyal street urchins called the Baker Street Irregulars, are back in a case that involves murder, abduction, and the hunt for a lost treasure. As Holmes and the BSI begin their investigations into a gruesome murder, all at once the detectives find themselves in danger. When a personal associate of the master detective disappears, Ozzie, Wiggins, and the gang know that they must uncover the truth - and...