The fifth SIGMA Force novel is The Last Oracle. It involves a high-level Russian politician's desire to use autistic savant children to develop a new world order. James weaves an exquisite plot linking the Greek Oracle of Delphi, the toxic ruins of Russia, the Roma people (gypsies who fled India in the 11th century), and the ancient Harappan culture of India into a tense, modern-day thriller. It also reveals that Monk did not die as expected in the Judas Strain, but was picked up by a Russian sub and ended up in the hands of the bad guys with amnesia due to experiments done on him. He is rescued by three of the children and spends the book trying to thwart the plot with them, despite his amnesia. With help from Gray and Gypsies, he and the children succeed although he still has possibly permanent amnesia at the end due to brain damage as a result of experiments. If the plans hadn't been stopped, many world-leaders would have been killed due to radiation exposure at Chernobyl and millions of people would have died worldwide due to radiation being flooded into the world from the highly-radioactive Lake Karachay. This novel also doesn't involve The Guild.