Greg Heffley, Big Nate, Nikki Maxwell and other tween book characters are back.

Captain Underpants and the Terrifying Return of Tippy Tinkletrousers

By Dav Pilkey
Scholastic, 304 pp.: $9.99, for ages 7 and up

Elementary school mischief makers travel back in time to kindergarten to confront a sixth-grade bully in the ninth installment of this series following the exploits of George and Harold and their principal-turned-superhero Captain Underpants.

(August )

Diary of a Wimpy Kid: The Third Wheel

By Jeff Kinney
Amulet, 224 pp.: $13.95, for ages 8 and up

In the seventh installment of "Diary of a Wimpy Kid," lovable middle-grade social climber Greg Heffley is back and scrambling to find a date for a Valentine's Day dance. Will Greg or his best friend Rowley have better luck in love?


The Mark of Athena

By Rick Riordan
Hyperion, 608 pp.: $19.99, for ages 10 and up

The third book in the bestselling "Heroes of Olympus" series unites six Camp Jupiter kids in the hopes of defeating giants released by Gaea and locating the doors of death.


Dork Diaries 5: Tales from a Not-So-Smart Miss Know-It-All

By Rachel Renee Russell
Aladdin, 336 pp.: $13.99, for ages 9 and up