Shadow Soldier (The Gunsmith Book #2)
Boothenay Irons possesses a mysterious power that allows her to go back in time and experience the history held within an antique gun. This time it's a 1911 Colt .45 Automatic and it has a mysterious power of its own. When Boothenay's fiance, Caleb, picked up the gun he immediately vanished and found himself in the midst of World War I. His only chance to return to the modern world is through Boothenay's extraordinary power. She must go back to 1911, find Caleb, and bring him back. Boothenay is escorted back to 1911 by a mysterious old man whose power is equal to her own, but she is suspicious of the man and tries to solve the mystery about him while looking for Caleb.