Flight attendant turned New York Times bestselling author T. J. Newman--whose first book, Falling, was an instant bestseller, an international sensation translated into thirty languages, and the biggest thriller debut of 2021--returns for her second book, which "reads like Apollo 13 underwater"(Don Winslow).

Six minutes after Flight 1421 takes off, it crashes into the ocean.

The passengers who survive the crash think it's a miracle.

They believe they're the lucky ones.

Then the plane begins to sink to the ocean floor.

The survivors are trapped inside.

Against all odds, a massive rescue operation is launched to save them.

There is not much time.

There is even less air.