Immersing himself in a mid-twenty-first-century technological virtual utopia to escape an ugly real world of famine, poverty, and disease, Wade Watts joins an increasingly violent effort to solve a series of puzzles by the virtual world's creator.

When young attorney Becky Balwin hires Cora Felton to accompany her to New York City to meet a new client in his penthouse apartment, the Puzzle Lady jumps at the chance. Cora is just coming off a bad breakup, and finding out that Chief Harper testified at a parole hearing for a killer she helped put away has her feeling old. But, when she and Becky arrive at the apartment, they find the man is dead. There's a puzzle on his chest, and a prowler is...

Three Chicago students, Melissa, Wilf, and Bondi, are unlikely participants in a competition for a ten thousand-dollar scholarship, unaware that there is much more at stake.

Ten-year-old Leo's future and the fate of the extraordinary Whippet Hotel, where his father is the maintenance man, are at stake when a series of cryptic boxes leads Leo to hidden floors, strange puzzles, and unexpected alliances.

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.

Puzzle-crazy, twelve-year-old Winston and his ten-year-old sister Katie find themselves involved in a dangerous mystery involving a hidden ring, in this book that includes puzzles for the reader to solve.

When an opportunity arises for the tearoom to host a special event with famed puzzle maker Bill Markham, Jan is elated. The event brings in puzzle lovers from all over Lancaster, Maine. When Katelyn Grande begins her puzzle, she quickly realizes that it was made specifically for her as a declaration of love. As Jane and Elaine set out to discover who the would-be paramour might be, they quickly find the clues more challenging and cryptic than any...

Thanks to a DNA test, Avery Grambs knows that she is not a Hawthorne by blood, but clues pile up hinting at a deeper connection to the family than she had ever imagined. Grayson and Jameson, the enigmatic and magnetic Hawthorne grandsons, continue to pull Avery in different directions. Tobias Hawthorne left his entire fortune to Avery, a virtual stranger, rather than to his own daughters or grandsons ... and there are those who will stop at nothing...

When a Connecticut teenager inherits vast wealth and an eccentric estate from the richest man in Texas, she must also live with his surviving family and solve a series of puzzles to discover how she earned her inheritance.

"Twelve-year-old Kyle gets to stay overnight in the new town library, designed by his hero (the famous gamemaker Luigi Lemoncello), with other students but finds that come morning he must work with friends to solve puzzles in order to escape"--