美剧版 《侠探杰克》同样改编自英国小说家李·查尔德的“浪子神探”系列，杂糅了悬疑推理和军事动作元素。书中的杰克·雷彻是前美国陆军宪兵军事调查员，其作风神秘，习惯独来独往，身高有6英尺5英寸（约1.95米），体重在210磅到250磅之间（95-113公斤）， 阿伦·瑞奇森身高为1.88。
Jack Reacher, in the novels, was once a milITary policeman in the United States Army. After leaving the military, he took on the role of an investigator, delving into suspicious and potentially dangerous cases.
Having honed his skills and instincts during his time in the army, Jack Reacher became a formidable force in the world of investigation. His military background provided him with a unique perspective, allowing him to approach cases with a methodical and strategic mindset. He had a deep understanding of the intricacies of law enforcement and had mastered the art of gathering evidence and analyzing crime scenes.
One of the reasons Jack Reacher was sought after for these dangerous cases was his ability to handle high-pressure situations and make split-second decisions. His military training had instilled in him a calmness and composure that set him apart from the average investigator. He possessed an uncanny ability to assess threats and adapt to rapidly changing circumstances, making him an ideal candidate for cases that required quick thinking and action.
Furthermore, Jack Reacher's physical prowess and combat skills were unmatched. His military training had molded him into a formidable fighter, capable of defending himself against any adversary. This gave him an advantage when dealing with dangerous criminals or navigating treacherous situations. He could handle himself in hand-to-hand combat, making him a force to be reckoned with.
Jack Reacher's reputation for being relentless and uncompromising also made him the go-to person for cases that required intense investigation. He had an unwavering dedication to uncovering the truth and ensuring justice was served. His determination and persistence were unmatched, often leading him to dig deeper and uncover hidden layers of corruption and crime.
Overall, Jack Reacher's transformation from a military policeman to an investigator allowed him to bring a unique skill set to the world of crime-solving. His military background, combined with his unwavering determination and physical prowess, made him a force to be reckoned with. Whether it was unraveling a complex conspiracy or taking down dangerous criminals, Jack Reacher was always up for the challenge.