After his parents are kidnapped, timid twelve-year-old Henry York leaves his sheltered Boston life and moves to small-town Kansas, where he and his cousin Henrietta discover and explore hidden doors in his attic room that seem to open onto other worlds.

Portia and her cousin Julian discover adventure in a hidden colony of forgotten summer houses on the shores of a swampy lake.

Cousins Mike and Kate must help the Philadelphia Phillies' mascot, the Phillie Phanatic, clear his name after the team's bats begin to suspiciously break during games.

Four cousins spending a summer in a house by the sea discover a magic thyme garden from which they embark on a number of adventures in time.

An ancient castle, a tragic love, and a web of secrets.... When her fascinating but unreliable cousin Harry invites her on a holiday to explore the legendary own of Chinon, France, and promptly disappears, Emily begins to uncover dark secrets beneath the charm. As the dangers of the past become disastrously real, she is drawn ever more deeply into a labyrinth of mystery as twisted as the streets and tunnels of the ancient town itself.

At first Henry's very neat cousin doesn't like the cookies from under his bed or Mudge's slobbery kisses, but when they all play frisbee, she begins to enjoy her visit.

Riding the Cyclone, the world famous Coney Island rollercoaster was supposed to be the highlight of twelve-year-old Nora's summer, but right after they disembark, Nora's thirteen-year-old cousin Riley falls to the ground and into a coma that Nora thinks is her fault.

"As a child, Natsuki doesn't fit into her family. Her parents favor her sister, and her best friend is a plush toy hedgehog named Piyyut who has explained to her that he has come from the planet Popinpobopia on a special quest to help her save the Earth. Each summer, Natsuki counts down the days until her family drives into the mountains of Nagano to visit her grandparents in their wooden house in the forest. One summer, her cousin Yuu confides to...

"Nick and her cousin, Helena, have grown up sharing sultry summer heat, sunbleached boat docks, and midnight gin parties on Martha's Vineyard in a glorious old family estate known as Tiger House. In the days following the end of the Second World War, the world seems to offer itself up, and the two women are on the cusp of their 'real lives': Helena is off to Hollywood and a new marriage, while Nick is heading for a reunion with her own young husband,...

Ravi spends summer vacation with his cousins sharing in all their favorite activities, including eating ice cream.