NEW YORK TIMES bestselling author Brett Battles delivers an international espionage thriller with exhilarating action, intrigue and suspense.

A snowy night. A train making its way through the mountains of Austria.

Asleep in one of the private compartments is a very important passenger, a scientist who has created something others desperately want.

Precautions have been taken to ensure the man's safe passage, but even with a highly skilled bodyguard onboard, the trip does not go as planned.

When the scientist vanishes, Jonathan Quinn and his team are sent in to locate him before the secrets in the man's head can be extracted. Because if that happens, the world would change forever.

If you enjoy action-packed international crime thrillers with high-stakes suspense, surprising plot-twists, and a cast full of unforgettable characters, then join millions of fans who love Battles' novels and start devouring your next great read THE UNKNOWN now!

PRAISE FOR BATTLES' WRITING

"Battles' writing is addictive." -NEW YORK TIMES bestselling author, James Rollins

"Brilliant and heart pounding." -NEW YORK TIMES bestselling author, Jeffery Deaver

"Battles is a master storyteller." -NEW YORK TIMES bestselling author, Sheldon Siegel

OVER 2,000 ????? POSITIVE REVIEWS ON GOODREADS AND AMAZON

????? "Another fantastic story and characters! Must Read!"

????? "I couldn't stop until I finished! Can't wait for the next one!"

????? "Adventure, action, intrigue! Battles always delivers!"