While playing lacrosse, third-grade twins Zach and Zoe search for the culprit who damaged Mateo's lacross stick.

With only days before the last game of the Stanley Cup finals in Boston, eight-year-old twins Zach and Zoe are determined to find hockey star Mik

"Someone is secretly renovating the basketball court at the local park, and Zach and Zoe are determined to find out who"--

When they go on a field trip to a pop-up museum sponsored by the National Baseball Hall of Fame, eight-year-old twins Zach and Zoe discover an em

"Zach and Zoe find their recess football deflated from a hole near the laces, and set off in search of clues to discover how it happened"--

Twins Zack and Zoe investigate when someone mails Zach a soccer jersey, identical to the one he wears on his travel team, with no explanation.

Eight-year-old twins Zach and Zoe follow clues to find Zach's missing baseball, signed by his favorite major league player, while competing in Sp

Twelve-year-old Nick García dreams of winning MVP of his summer baseball league, of finding a cure for his sister, of meeting his hero, Yankee pi

Twelve-year-old Tommy Gallagher, the bravest and toughest football player on the field, faces his biggest battle ever when his father, a Boston f