O.N.D.

Rikard, Tommy and Karen end up in serious trouble in Oslo. They have to decipher mysterious graffiti messages and explore secret tunnels—and all the while, terror drones are buzzing over their heads. Never before have the three friends faced such a challenge. Never have they experienced such harrowing cliff-hangers. The frenzied robots are back with a vengeance.

The suspenseful books in the Robophobia series are about what happens to three friends when technology goes haywire. The second book, Unknown Danger, is nominated for the Bookworm Award, a prestigious children’s book prize that is selected by schoolchildren from all over Norway. Previosuly published: School of Death and Unknown Danger.