Lifeblood - Hugh Matthews

Logan has begun to experience memories of time spent serving in the Canadian army during World War II. When he digs deeper he discovers that he was held as a prisoner of war at a concentration camp, and experimented on by a ruthless Nazi scientist determined to unlock the secrets of Logan's mutant healing properties. What Logan doesn't know is that the scientist is still at large, his thirst for immortality unquenched by time. Now that he knows Logan is alive, he'll stop at nothing to finish what he started sixty years earlier...