Fantastic Voyage 2: Destination Brain

After the successful movie, "The Fantastic Voyage," Issac Asimov was to do the job of novelizing the film. His book was a success! However, Asimov didn't feel satisfied, for the Fantastic voyage was not entirely his. So he writes the "Fantastic Voyage II Destination: Brain" which Asimov can freely say that it is his. The novel is not a sequel to the first Fantastic Voyage. The characters are different, and there is no mention of the first novel. However, it holds the same concept of humans shrinking and traveling inside a human body, in this case, it is the body of a Soviet Scientist, Pyotr Shapirov.

The Soviets have been working on a top secret project to learn learn how to miniaturize (shrink) a person. They have achieved that goal, but the process is pretty costly and troublesome. The mastermind behind the project, Pyotr Shapirov, insisted on being miniaturized himself. But due to a fatal accident, he went into a irreversible coma and was going to die, but only he held the secret to practical miniaturization!

Now a team of scientists along with a submarine are to be miniaturized and venture into the brain of the genius to try to unlock the secret of miniaturization. Along with them is our main character, Albert Jonas Morrison, an American neurologist who came up with a theory and a device to detect one's thoughts and brainwaves, but his ideas were ridiculed and weren't supported by the scientific community.
But Morrison was asked by one of the Soviet scientists to come and help with the mission, but Morrison refused to believe in miniaturization. Even when the American Government was told of this miniaturization thing, they insisted Morrison to go and act as a spy, but Morrison refused that too. So the Soviets kidnapped him and took him to Russia. There they convinced him, or rather put him in a situation where he had no choice but to participate in the fantastic voyage.

The book has lots of good scientific explanations for the events, but I didn't think the characters were interesting enough. Some people say this story was intellectually stimulating, while many others say first fantastic voyage was a lot better.