Which author wrote the 'Jack Reacher' series?

Lee Child wrote the Jack Reacher series. Jack Reacher is a former major in the United States Army Military Police Corps who travels without a permanent home, becoming involved in dangerous investigations wherever suspicious events cross his path.

Reacher first appeared in Killing Floor, published in 1997. The novel was Lee Child’s debut and won the Anthony Award and the Barry Award for Best First Novel. Child’s books combine crime investigation, military knowledge and action-thriller storytelling, while Reacher’s independence allows each story to move to a new town or region.

Lee Child is the pen name of James Dover Grant, a British author who deliberately writes American-style thrillers. The contrast between the author’s background and his hero’s identity is a common point of curiosity: Reacher is American, while Child was born in Coventry, England. The name Reacher reportedly grew from a family joke about Child’s height and reaching for things on high shelves.

The series has also been adapted for film and television. Tom Cruise played Reacher in two films, while Alan Ritchson stars in the Amazon series Reacher. Those adaptations draw from the novels but do not replace the books as the source of the character.