When Clark Kent and his, Bruce and Diana, are invited to Camp Evergreen, their initial fun with new and old friends is thrown into chaos by disappearing campers and rumors of monster sightings.

The long-awaited prophecy surrounding Percy Jackson's sixteenth birthday unfolds as he leads an army of young demigods to stop Kronos in his advance on New York City, while the Olympians struggle to contain the rampaging monster, Typhon.

"Like a bolt from the blue, Jack's little sister Maddy is gone--carried into another realm by an ogre. When Jack and Lilly follow Maddy's captor through the portal, they are ready for anything . . . except what they find waiting for them in the floating crossroads between worlds. Even the power of their magic plants may not be enough to get them back to earth alive. Alone and injured, Jack and Lilly must each face their own monsters--as well as giants...

There's a reason scary movie fan and master of the macabre Casey Clive looks ten times paler and more exhausted than the average sixth-grader: MONSTERS! He's got tons of them! For the last...er...unusual year, monsters have been arriving on Casey's doorstep needing a place to stay, something to eat, and lots and lots of attention. It's getting impossible to keep these haunted houseguests a secret, much less get a good night's sleep. Casey has to find...