Beyond the Ice Limit

Having barely survived and miraculously recovered, Glinn recruits a team including master thief and nuclear physicist Gideon Crew to seek and destroy this lifeform.

Traveling to the site of the previous sinking, the team discovers that the "spore" has sprouted into a massive structure that they nickname the Baobab, simultaneously reaching toward the ocean surface and burrowing through the earth.

The novel concludes with the team listening to a farewell message from the alien brain originally imprisoned within the Baobab, a song of unearthly beauty.

The Associated Press wrote of the book that "Preston & Child take all of the various elements from classic horror and sci-fi films and novels and spin them together to write what begins as an action adventure, but soon delves into paranoid terror.

"[3] Publishers Weekly wrote, "The bestselling authors maintain suspense throughout, and they throw in some original ideas that offset some familiar action tropes.