Mr. Summerling has left Marly, Sai, and Isla a set of brand-new clues to follow, including tickets to the mysterious Summer Island, where they hope to finally discover what lies at the end of the treasure hunt.

"When Abigail Holland awakes to the sound of a nighttime intruder in her rambling Denver Victorian, she knows exactly what the black shrouded figure is after--the map she recently inherited from her grandfather. Whoever he is, the man who grapples with her, then escapes, is willing to kill for the location of a treasure King Farrell hunted for more than ten years. The Devil's Gold has claimed hundreds of lives, and it was her grandfather's obsession....

Ruby's cousin Avital is sad because her mom is going on a work trip during Hanukkah, so Ruby plans an eight-night treasure hunt to ensure Avital has a good holiday. Includes a note about Hanukkah and instructions on playing dreidel.

Joan Blakely had an unconventional childhood: the daughter of a globe-trotting supermodel and a world-famous artist. Her artist father died on 9/11, and Joan--an art historian by training--has spent more than a decade maintaining his legacy. Life in the art world is beginning to wear on her--and then one fateful afternoon her husband drops a bombshell: he's fathered twins with another woman. Furious but secretly pleased to have a reason to blow up...

A fortune cookie convinces Ben he can have whatever he wants if he is willing to wait, but getting paired with eccentric former friend Walter for a school scavenger hunt leads to unexpected rewards.

Soon after receiving an anonymous message stating that she has twenty-four hours to play a game by the sender's rules or he will kill her sister, sixteen-year-old Crystal Donovan realizes that cooperating will destroy her friends' lives and she must figure out a way to beat the kidnapper at his own game before she loses everything.

The two best friends come across an enthusiastic school of fish one morning. Unfortunately, Mr. Blowfish, their teacher, has come down with a cold, and class will have to be cancelled ... until Professor Knowell (Narwhal) and Super Teacher (Jelly) volunteer to help out! The first subject is Wafflematics, in which Narwhal and Jelly calculate the number of waffles needed to feed the class. That's what we're chalking about! Next up is a super-fun science...

Zane is itching for an adventure that will take him away from his family's boarding house in Rockaway, Queens. So when he is entrusted with a real treasure map, leading to a spot somewhere in Manhattan, Zane wastes no time in riding the ferry over to the city to start the search with his friends Kiko and Jack and his dog, Hip-Hop. Through strange coincidence, they meet a man who is eager to help them find the treasure: John, a sailor who knows all...