Based on Lee Child's novels, what Amazon Prime Video series stars Alan Ritchson as a former U.S. Army military police investigator who wanders the United States solving crimes and unraveling conspiracies?

The Amazon Prime Video series that features Alan Ritchson as a former U.S. Army military police investigator who travels the country solving crimes is indeed "Reacher (Review)." The show is a direct adaptation of the popular Jack Reacher novel series by British author Lee Child. The character of Jack Reacher is known for his imposing physical presence, keen intellect, and a strong sense of justice, often finding himself embroiled in dangerous situations as he drifts from town to town with minimal possessions.

Alan Ritchson's portrayal has been widely praised by fans and even by Lee Child himself, who noted Ritchson's embodiment of the character's physical traits and military background. Reacher, a self-proclaimed drifter, carries no phone and only the barest essentials, exploring the nation he once served as he encounters and unravels complex criminal conspiracies. Each season of the series typically adapts one of Child's novels, bringing to life the character's unique brand of vigilantism and his encounters with various adversaries.

The series delves into Reacher's past as a major in the U.S. Army's military police, where he led a special investigations unit, providing context for his exceptional skills and his commitment to uncovering the truth. His nomadic lifestyle allows him to stumble upon unusual circumstances and apply his formidable strength, intellect, and abilities to battle dangerous criminals, delivering a distinct form of justice that resonates with audiences.