Nice thriller and storyline. Nice to have Eugenia and Zirov with Hannah. ( )

Too many unanswered questions for me.

The review is from Amazon:

While mapping the ancient underwater city of Marinth in the Atlantic Ocean, submersible designer Hannah Bryson makes a shocking discovery: she may have finally uncovered the truth about the once-glorious city’s mysterious demise. Long ago it was a thriving metropolis bursting with culture and life—Marinth’s sudden disappearance has plagued scientists for years. But now, with her unexpected new findings, Hannah realizes that the ancient city’s explosive secret could have dire consequences for the modern-day world.
But Hannah isn’t the only one who realizes it. When her key artifact is hijacked en route to a research lab, she is thrust into an adventure in which she must match wits against a terrifying enemy who will kill anyone who stands in his way. And when Hannah becomes his target, she knows that her best hope for survival lies with Kirov, a mysterious and deadly man from her past. Together they will race to unravel Marinth’s last great secret in order to prevent a catastrophe of global proportions. Before the lethal game is over, however, Hannah will realize that no one is above suspicion. ( )

An odd story and a lot disjointed. It read like the two authors took turns writing different sections. I did not care for it at all. ( )

I've always been an Iris Johansen fan, but for me, this book fell a little short of the mark. The exploration of the ancient civilization of Marinth that had sunk to the bottom of the sea was intriguing, but the dialogue was elementary and the characters themselves were stilted and rather one-dimensional. ( )