While trying to hide an incriminating report card and dodge meddling siblings, fifth-grade twins Hunter and Zack set out to save their town from a diabolical dentist who is planning to blow it to smithereens.

When neighbor Sarah Yulefski tells Zack and Hunter that she overheard someone talking about plans to kidnap someone in their town, the twins use the last four days of summer vacation to investigate.

Three city siblings, now living on a farm during the Great Depression, must survive on their own when their father takes a construction job miles away.

Number one kid: That's what Mitchell McCabe's favorite T-shirt says. He'd like to be Number One at the Zigzag Afternoon Center, where there are lots of fun activities to choose from. But Mitchell is worried. What if he's the only kid who doesn't get a prize on Prize Day? Big whopper: It's discovery week at the Zigzag Afternoon Center! Everyone writes their discoveries on a big sheet of paper in the hallway. But Destiny Washington can't think of anything...