The evil Dr. Hatch has captured the 9-year-old genius Jade Dragon, who has the knowledge to solve his problems in creating an electric super race. Michael Vey and his Electroclan must embark on their most dangerous mission yet to save her.

"MICHAEL VEY, Book 4: Hunt for Jade Dragon," by Richard Paul Evans, Mercury Ink, $18.99, 336 pages (f) (ages 12 and up)

Michael Vey and his Electroclan are back in author Richard Paul Evans' fourth book in the planned seven-book series, "Michael Vey: Hunt for Jade Dragon."

After sinking the Elgen's flagship boat, the Ampere, and throwing a wrench in the Elgen's plans to overthrow the Tuvalu people in the third book, "Battle of the Ampere," Michael and his electric friends find themselves on a secret compound to recuperate and prepare for their next mission: finding and saving Jade Dragon.

Jade Dragon, an autistic 9-year-old Chinese girl, is taken captive by the evil Dr. Hatch. She's unable to hear or speak, but she's a genius who has discovered the secret to creating an electric race of people without the casualties that are occurring in Dr. Hatch's experiments. With her knowledge, Dr. Hatch plans to create a new electric race of human and eliminate the existing human population with biblical destruction.

Even though Vey and his Electroclan have fought through and endured dangerous missions, this is the most dangerous so far. They've got to get through the Elgen; the Taiwanese army; the Lung Li, an elite branch of the Elgen guard made up of Asian mercenaries; and the Glows to get to Jade Dragon.

Vey and his friends are forced to stretch and discover the extent of their powers, find help with unlikely allies and look within themselves to figure out what they are fighting for.

While the action, plotlines and story are fast-paced and interesting, Evans' writing can be confusing. His writing style and dialogue are a better fit for a middle-grade audience, but the romance and evil characters committing dark deeds are a better fit for young adult readers or older, making an unsatisfying combination. Despite a monumental mission to rescue Jade Dragon, very little is actually said about Jade Dragon herself.

Even so, Evans takes readers on an action-packed journey into Taiwan with a cliffhanger ending that catapults readers into book five without asking questions.

"Michael Vey: Hunt for Jade Dragon" contains no swearing, sex or detailed violence.