This is the 3rd book in the MEG series, about an ancient megaladon (giant great white shark), found in the Mariana Trench, and lured to the surface. In book one, after it savaged a bunch of people, a juvenile was finally caught and brought to a specially built aquarium for research on it. Enter Jonas Tyler, who was in on the first encounter, and nearly lost his life, and did lose the two divers who accompanied him when he made a rapid rise to the surface in a panic over the Meg. They were down in the Trench due to the presence of a substance that could spell unlimited energy. He went down a second time, due to the requirements of the company that was helping them out, a Japanese government scientific arm – they wanted a series of robotic sensors placed along the Trench to help warn of seismic activity changes to help with tsunami warnings.
The aging center is in urgent need of repairs, particularly to the sea gate. Jonas is still working closely with the Center’s director, Dr. Masao Tanaka, and is married to Masao’s daughter Terry. On his second dive in the Trench, he goes with Tanaka’s son, and that ends badly. Now, in order to fulfill the contract, and due to the financial mess the center was in due to the lawsuits that rose from the first encounter in the trench, they needed the help of financier Benedict Singer, who unknown to them, had an agenda of his own. Jonas was deathly afraid of the Trench by now, and was convinced he would die there – he had nightmares from which he awoke screaming. But he must go down, as one of the subs that went down to service Singer’s new scientific research station down there, had disappeared. Somehow, unknown to him, his wife Terry is lured down to the station itself by Singer – he wants to use her as bait to get some information from Jonas. But the Megaladon in the meantime, has left the Trench and is carrying on a bloody rampage up and down the Western coastlne, killing people right and left. Before leaving, Taylor and Matsao are trying to capture the female great white, and either destroy her or bring her to the lagoon, where they can decide what to do to them. Singers people have a different idea than they do – to sue her as a attraction. But Taylor and Matsao know better – the Meg cannot be contained. Between underwater shenanigans in the subsurface station, a Meg loose and on the run in the Pacific, and Jonas’s fear, it is a fun ride, as all Alten’s books are. Enough backstory is included that you don’t need to have read the first two – due to my memory, I had forgotten them, and it didn’t bother me, although reading them in order would highlight the whole story and make it more cohesive. Have fun with this one, and play some john Williams while reading. Dah-dah, dah-dah. (any errors in facts on the book are mine alone – since I read it in January, some of the details escape me, and I had to rely on going back to the book and checking, which can give you a skewed perspective as you hop around. But the basics are there, if not if perfect order – sorry!)