The first season of Reacher was based on Killing Floor, Child's 1997 debut novel,
The third season based on Persuader the seventh book
One Shot is the ninth book in the Jack Reacher series written by Lee Child. The book title is based on "One shot, one kill," the military sniper's creed. The novel was adapted into the 2012 film starring Tom Cruise as the title character.
The second season, based on Bad Luck and Trouble the eleventh book
Gone Tomorrow is the thirteenth book will be adapted to screen for the upcoming fourth season
Never Go Back is the eighteenth book
produced the 2016 film adaptation, Jack Reacher: Never Go Back, as a sequel to 2012 film, Jack Reacher.
The book continues the storyline covered in the novels
61 Hours - book 14
Worth Dying For - book 15
and
A Wanted Man - book 17