At time of writing he's 14 books deep into his Walt Longmire series. Not sure I'm going to be reading them all, but I'll keep an open mind until after I've read these first two in the series.
Longmire has been adapted into a TV series, but I've not watched any of it. Not sure what the general consensus is on it, but I guess it hasn't harmed the author's book sales or bank balance and good luck to him.
Craig Johnson has a website here, where you can find out about the rest of the books in the series.
The Cold Dish (2004)
The citizens of the Cowboy State boast a long and bloody history of dispensing rough justice but the last few decades have bred peace between the white and Native American communities. So when Cody Pritchard is found dead near the Northern Cheyenne Reservation, Sheriff Walt Longmire and the general population of Absaroka County are inclined to think it's a hunting accident. But two years earlier Cody was one four high school boys convicted of brutally raping Melissa Little Bird, a young Cheyenne girl with fetal alcohol syndrome. The boys were guilty but let off with suspended sentences. Was this a revenge killing? Sheriff Longmire intends to find out.
After twenty-four years as sheriff, Walt, along with Deputy Victoria Moretti and lifelong friend Henry Standing Bear, is embroiled in the most volatile and challenging case of his career. He might be the only thing standing between the three remaining boys and a Sharps .45-70 buffalo rifle.
In the first book of this new series, Wyoming resident Craig Johnson fills the vast emptiness of the high plains with a cast both tragic and humorous and brings a unique landscape and its people to life with mesmerizing authenticity.
Death Without Company (2006)
A new Sheriff Walt Longmire mystery from the author of the acclaimed The Cold Dish
With his debut novel, The Cold Dish, Craig Johnson proved himself a strong new voice in the realm of literary mystery. In his newest work, Johnson again takes us to Sheriff Walt Longmire's Absaroka County, Wyoming.
When Mari Baroja is found poisoned at the Durant Home for Assisted Living, Sheriff Longmire is drawn into an investigation of her death that proves to be as dramatic as her life. Her connections to the Basque community, the lucrative coal-bed methane industry, and the personal life of the previous sheriff, Lucian Connally, lead to a complex web of half-truths and assumed allegiances. As the specter of Mari's abusive husband arises, Sheriff Longmire, aided by his friend Henry Standing Bear, Deputy Victoria Moretti, and newcomer Santiago Saizarbitoria, must connect the past to the present to find the killer among them. Death Without Company is a riveting tale of the unspeakable viciousness that can lurk in the most beautiful and unlikely of places.