In Nelly Rapp and the Genie in a Bottle, Valle has finally joined Nelly’s class. Their wonderful teacher, Birgitta, is about to retire and tells them that she plans to build a laboratory in her garage to try and invent an environmentally friendly fuel. However, when Nelly and Valle go up into the school’s attic, they stumble upon a bottle with a genie inside it. The genie has a cautionary tale to tell: Research about new fuels can end in horror – even lead to you living out your days trapped in a bottle in a school attic!

Nelly Rapp and the Genie in a Bottle is Martin Widmark and Christina Alvner’s twentieth book about the monster agent Nelly Rapp. As always, it’s spooky at times, but funny and easy-to-read too.