Amos Walker
Amos Walker is a fictional private detective in a series of more than thirty novels and short stories written over the course of five decades by Loren D. Estleman. Publishers Weekly has called author Estleman "arguably the finest [living] practitioner of hard-boiled private eye fiction with his Amos Walker novels," and the series has won multiple Shamus Awards from the Private-Eye Writers of America (PWA), including a Lifetime Achievement Award for the author. Walker works in Detroit and lives on the Detroit-Hamtramck border. A Vietnam veteran who boxed in college and served as a military policeman, he is sharp and streetwise. Like all good private investigators, Amos has an independent and  pugnacious streak: While still in the police academy, he was fired from the Detroit Police for punching out a creepy but connected fellow cadet in the shower. On his first appearance, in Motor City Blue (set around 1980), Amos is in his thirties, and he ages over the course of subsequent novels. Amos Walker is a traditionalist. As one reviewer noted:

The Thrilling Detective website stated:

Bibliography
Motor City Blue
Angel Eyes
The Midnight Man
The Glass Highway
Sugartown
Every Brilliant Eye
Lady Yesterday
Downriver
General Murders: Amos Walker Mysteries (1988; ten short stories)
Silent Thunder
Sweet Women Lie (1990)
Never Street
The Witchfinder
The Hours of the Virgin
A Smile on the Face of the Tiger
Sinister Heights
Poison Blonde
Retro (2004)
Nicotine Kiss (2006)
American Detective (2007)
Left-handed Dollar (2010)
Amos Walker: The Complete Story Collection (2010; short stories)
Infernal Angels (2011)
Burning Midnight (2012)
Don't Look for Me (2014)
You Know Who Killed Me (2014)
The Sundown Speech (2015)
The Lioness Is the Hunter (2017)
Black and White Ball (2018)
When Old Midnight Comes Along (2019)
Cutthroat Dogs (2021)
Monkey in the Middle (2022)
City Walls (2023)

Further reading

 Estleman, Loren D. [text] and Monte Nagler [photographs] (2007). Amos Walker's Detroit. Wayne State University Press, Detroit. . "It's a hard-boiled town," writes Estleman of Detroit in his preface, "made to order for a remaindered knight chasing truth through a maze of threats, deceptions, and inconvenient corpses. City and protagonist are cut from the same coarse cloth. They are the series' two heroes." References

Fictional private investigators
Fictional characters from Detroit
Detroit Police Department officers
Fictional portrayals of the Detroit Police Department