SOLVED. A Russian mercenary or spy, Atlantis researcher, has the phrase'thunder' in the title. [s]

[Kryte]

I am looking for a romance book about a Russian mercenary or spy being involved with a female Atlantis researcher and him getting close to her after she found a weird message/code in the submarine. Remember the title as having the word 'thunder' in it. I also remember the Russian male lead being a captain...

[Kate]

Kryte ~~
You can "bump" your thread every month or so. This pushes your thread back to the top of the folder instead of languishing here on page 85 where fewer eyes will see it. Get back in the game! Bump!
You can do this by typing a new comment at the end of the thread, or even by typing the word "bump."
Good luck!

[Kryte]

Bump

[Kris]

A long shot - Atlantis (2005) by David Gibbins?

Kryte, around what year did you read this book? This will help us narrow down the search.

What is the story's time period and location (country/region/city)? Is war time?

[Mai]

Maybe Silent Thunder and Shadow Zone by Iris Johansen and Roy Johansen?

The books came up searching on AbeBooks. Your plot description sounds like the second book, Shadow Zone, but the first book has the word Thunder on it so I mentioned it too!

[Kryte]

That was the book, Silent Thunder and Shadow Zone by Iris Johnson and Roy Johnson. Thanks for your help.