Twelve-year-old Jess and her friends have been playing hockey with the boys in Fort Desperation, Northwest Territories, since they were six years old. They'd like to start a girls' team in their community, but is tiny Fort Desperation ready for it? Somebody is trying to scare them off through acts of vandalism. Not only do Jess and her friends have to organize a team, find a coach and learn to play together, they have to unmask the Hockey Vandal....

Someone is spray-painting graffiti all over Cedar Valley and it is up to fifth-grader Nolan Byrd, also known as Shredderman, to expose the vandal.

"Twins Katherine and Elizabeth Chatswood are on their way to visit their distant relatives at Vandermeer Manor in Rhode Island. Wedding bells will soon be ringing for their father's cousin in the grandest event on either side of the ocean since the twins' birthday ball a few months ago. But when something very precious inside the manor gets vandalized, the groom threatens to call off the wedding. ... The twins don't know it yet, but they might hold...

The Alden siblings volunteer at the local recycling center, where they find plenty of things that can be reused, but when the center is vandalized, they must investigate to solve the mystery.

The North Police are the elves who investigate crimes at the North Pole, and in their latest case they have to solve the mystery of the nasty scratch on Santa's sleigh--which apparently never left the Christmas town garage.

"Peasprout Chen dreams of becoming a legend of wu liu, the deadly and beautiful art of martial arts figure skating. As the first students from the rural country of Shin to attend Pearl Famous Academy of Skate and Sword, Peasprout and her little brother Cricket have some pretty big skates to fill. They soon find themselves in a heated competition for top ranking. Tensions rise when the dazzling pearl buildings of the Academy are vandalized and outsider...

Societies thrive on order, and the Rating System is the ultimate symbol of organized social mobility. The higher your rating soars, the more valuable you are. The lower it plummets, the harder you must work to improve yourself. For the students at the prestigious Maplethorpe Academy, every single thing they do is reflected in their ratings, updated continuously and available for all to see. But when an act of vandalism sullies the front doors...

"Fresh off their first successful investigation, Kazu and her friends -- March, CindeeRae, and Madeline -- are hungry for their next case, which comes when a vandal begins targeting local comic book stores with anti-comic graffiti. March is especially desperate to unmask the villain before his beloved shop, The Super Pickle, gets hit. But when March takes over, the gang starts butting heads. It doesn't help that Kazu is distracted by another mystery...

"Sixth-graders Stanley, Charlotte, Gertie and Felix did more than just start a detective agency. Using their math skills and their gut instincts, they actually solved a crime the police couldn't crack. Now the Math Inspectors are called in to uncover the identity of a serial criminal named Mr. Jekyll, whose bizarre (and hilarious) pranks cross the line into vandalism. But the deeper the friends delve into the crimes, the more they realize why they...