About The Jack Reacher Experiment series Rock Wahlman: Forty-one years old, United States Navy Master at Arms, E-8, retired. DOB 14 October 2057. Grew up in an orphanage, recently discovered that he is the product of a human cloning experiment, an exact genetic duplicate of a former army officer named Jack Reacher. Now someone wants all evidence of the experiment to be erased, which means that someone wants Wahlman to be erased. He’s on the run, desperate to survive, desperate to learn the truth about why all this is happening… The use of story situations and supporting characters from the Jack Reacher universe authorized by Lee Child. Kill Shot: The Jack Reacher Experiment Book 4 is 18,000 words, approximately 85 pages.