Snakehead by Anthonly Horowitz
Snakehead, the seventh book in the Alex Rider series, will grab you right from the beginning.
The story starts where the previous book, Ark Angel, left off, with Alex bobbing up and down in the ocean off the coast of Australia in a space capsule. Once again he resolves that he is finished working for the British spy agency MI6. He just wants to return to England and return to the normal life of a 14-year-old schoolboy.
But the Australian Secret Intelligence Service (ASIS) asks him to help them break up a criminal ring called a snakehead. When he learns that he will be working with his godfather, a man he barely remembers, he agrees hoping for the chance to learn more about his dead parents.
The snakehead is headed by Major Yu, a member of the evil SCORPIA; an organization Alex has encountered before. Alex and his godfather's job is to find out how the snakehead is getting illegal immigrants into Australia, but Alex discovers that the more important job is to stop Yu from setting off a bomb under the ocean that will create a tsunami that will kill thousands of people.
Alex faces one life-threatening situation after another as he tries to save the world! Will he succeed or will he end up in Major Yu's secret hospital where his body parts will be sold off, one by one (Huh????)
You'll have to read the book to find out. If you are a fan, you will enjoy every second of it!