The Curiosity by Stephen P. Kiernan

The Curiosity is a gripping, poignant, and thoroughly original thriller that raises disturbing questions about the very nature of life and humanity—man as a scientific subject, as a tabloid plaything, as a living being, as a curiosity.…
 
Dr. Kate Philo and her scientific exploration team make a breathtaking discovery in the Arctic: the body of a man buried deep in the ice. Remarkably, the frozen man is brought back to the lab and successfully reanimated. As the man begins to regain his memories, the team learns that he was—is—a judge, Jeremiah Rice, and the last thing he remembers is falling overboard into the Arctic Ocean in 1906.
 
Thrown together by circumstances beyond their control, Kate and Jeremiah grow closer. But the clock is ticking and Jeremiah’s new life is slipping away...and all too soon, Kate must decide how far she is willing to go to protect the man she has come to love.