"In Oslo, after the first snow of the season has fallen, a woman disappears, and a sinister snowman is left in her wake. As irascible detective Harry Hole realizes that this is only one of multiple disappearances, he begins to think a serial killer may be at work--and may be drawing in Hole personally and intentionally"--.
New friends Nilly and Lisa help eccentric professor Doctor Proctor to develop his latest invention, a powder that makes one fart, making them very popular at school, but someone is planning to steal the industrial-strength formula for evil purposes.
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.
