Finn and his friends defend a deep-sea octopus from an unknown danger in this hilarious and action-packed second book in the R.A.P.T.O.R. middle grade series perfect for fans of Alex Rider and Jurassic Park.

Finn and Milo get assigned a R.A.P.T.O.R. mission in the Pacific Ocean, along with a new girl, Tasi, and Arty the Microraptor. They've been sent to investigate a giant, deep-sea octopus that's coming unusually close to the surface. But when their ship is torpedoed by a submarine that's shaped like a manta ray, it's clear something nefarious is happening in the ocean that someone doesn't want R.A.P.T.O.R. to discover.

Plunged into danger, the junior agents will have to survive on their own as they once again come face to face with an enemy with fathomless ambition.