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.

"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. 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"--Provided by publisher.