Catholic-schooled seventh-graders Sophie, Margaret, Rebecca, and Leigh Ann help an elderly neighbor solve a puzzle her father left for her estranged daughter twenty years ago. First in a series. Sequels: The Vanishing Violin, The Mistaken Masterpiece.
In a futuristic London, sixteen-year-old forensic investigator Luke Harding and his robotic assistant, Malc, investigate a series of murders in which there are no traces of a murder weapon, and the only thing the victims seem to have in common is their name.
Here comes Sammy Keyes, a resourceful, brave, too-curious-for-her-own-good young sleuth who gets into trouble with her grandmother's binoculars. Sammy was just killing time when she looked across the street with the binoculars. She certainly didn't imagine that she would see a thief in the act of stealing something from one of the rooms at the Heavenly Hotel. The worst part is that the thief saw Sammy spying! And what did "smart" Sammy do then? She waved at the thief! Now Sammy is in loads of trouble. Can she solve the mystery of the hotel thief before the thief finds her and before the police discover that she has been living illegally with her grandmother? First in a series.
Connor is sure his best friend, Branwell, couldn't have hurt Branwell's baby half sister, Nikki. But Nikki lies in a coma, and Branwell is in a juvenile behavioral center, suspected of a horrible crime and unable to utter the words to tell what really happened. Connor is the only one who might be able to break through Branwell's wall of silence. But how can he prove Branwell didn't commit the unspeakable act of which he's accused - when Branwell can't speak for himself?