New adventures await Doctor Proctor, Lisa, and Nilly as they try to protect Oslo, Norway, from invading aliens, enormous snakes in the sewers, seven-legged Peruvian sucking spiders, and sinister waffle irons.

Three billy goats outwit a troll that lives under the bridge they must cross on their way to Nanny Mary's Shimmy Shack.

Eli was six when her mother disappeared off a frozen fjord in Norway under the Northern Lights and now, at age sixteen, she returns, determined to discover what really happened.

Garmann makes friends with Johanna, the twin sister of the girl who torments him at school, when they discover that they both love adventures and talking about outer space.

In this retelling of the Norwegian tale, a traveler from Finnmark and his polar bear help scare away the trolls that harass Halvor and his family every Christmas Eve.

A girl with recurring memory loss chases down the boy she loves based on the one memory she is able to hold onto. For the past seven years Flora Banks has no short-term memory. Her mind resets itself several times a day, and has since the tumor was removed from her brain at the age of ten. Then when she kisses Drake, her best friend's boyfriend, the night before he leaves town, this one memory breaks through Flora's fractured mind and sticks. She's...

Twelve-year-old William Wenton is a code-breaking, puzzle-solving genius. He lives with his family in a quiet Norwegian town. He and his family used to live in England, but eight years ago his grandfather vanished and the Wentons suddenly packed up, moved to Norway, and changed their last name! Neither of his parents will tell William why or share the reason he has to keep his talent for solving codes and puzzles a secret. But then a special exhibit...

"There are no polar bears left on Bear Island. At least, that's what April's father tells her when his scientific research takes them to a faraway Arctic outpost for six months. But one night, April catches a glimpse of something distinctly bear shaped loping across the horizon. A polar bear who shouldn't be there--who is hungry, lonely, and a long way from home. As their unlikely bond grows, April is determined to save her new friend--and so begins...