When it comes to writing, Robert B. Parker knows no boundaries. From the iconic Spenser detective series and the novels featuring Sunny Randall and Jesse Stone, to the groundbreaking historical novel Double Play, Parker's imagination has taken readers from Boston to Brooklyn and back again. In Appaloosa, fans are taken on another trip, to the untamed territories of the West during the 1800s.

It is the winter of 1879, and Dodge city has lost its snap. Thirty-one-year-old Wyatt Earp, assistant city marshal, loads his wife and all they own into a wagon, and goes with two of his brothers and their women to Tombstone, Arizona, land of the silver mines. There Earp becomes deputy sheriff, meeting up with the likes of Doc Holliday, Clay Allison and Bat Masterson as well as finding the love of his life, showgirl Josie Marcus.

Haller is a Lincoln Lawyer, a criminal defense pro who operates out of the backseat of his Lincoln Town Car, to defend clients at the bottom of the legal food chain. It's no wonder that he is despised by cops, prosecutors, and even some of his own clients. But an investigator is murdered for getting too close to the truth and Haller quickly discovers that his search for innocence has taken him face to face with a kind of evil as pure as a flame.

Ex-military policeman Jack Reacher is a drifter. He’s just passing through Margrave, Georgia, and in less than an hour, he’s arrested for murder. Not much of a welcome. All Reacher knows is that he didn’t kill anybody. At least not here. Not lately. But he doesn’t stand a chance of convincing anyone. Not in Margrave, Georgia. Not a chance in hell.

After a lifetime of robbing banks and holding up trains, Jimmy "Slash" Braddock and Melvin "Pecos Kid" Baker are ready to call it quits, though not completely by choice. Sold out by their old gang, they have to bust out of jail and pull one last job to finance their early retirement. The target is a rancher's payroll train. Catch is: the train is carrying a Gatling gun and 20 deputy US marshals who know they're coming. Caught and quickly sentenced to hang, their old enemy - the wheelchair-bound, bucket of mean, Marshal L. C. Bledsoe - shows up at the last minute to spare their lives.

Hired by a wealthy family to locate their teenage daughter, Sunny Randall, a former cop turned Boston P.I., soon finds herself the bodyguard for a difficult teenager who refuses to return to her family. But before long, Sunny is facing greater problems than she ever imagined including a criminal conspiracy that reaches to the top of the state government.

US Deputy Marshal Earl Crawford had just entered the office after returning from a typically Texan assignment where bullets flew like dirt in a twister. He hadn’t even hung his hat when the boss approached him about an even more dangerous mission, but only if he chose to accept the job. Normally, he wasn’t given the choice, but in this case, even though he could have turned it down, he knew that he had to go.

It is 1947 when Joseph Burke, ex-Marine, ex-husband, ex-somebody–is hired as a bodyguard to protect Lauren Roach, 25 and spoiled rotten. The unlikely duo becomes entangled with Burke’s boyhood hero, color-barrier breaking baseball player Jackie Robinson, in a story that is both thrilling and engaging. It is in the historical character Jackie Robinson that Mr. Parker finds inspiration and Joseph Burke may find his redemption. This is a work of fiction about a real man. Most of what I’ve written I’ve made up. I have, however, attempted to render Jackie Robinson accurately. As he was, or as I imagined him to be, in 1947, when I was turning 15, and he was changing the world. The rest is altogether fiction. It may be more Burke’s story then Jackie’s story. But, without Jackie, Burke would have had no story. And neither would I. Robert B Parker.

Deadwood, South Dakota. Miners flock there seeking fortunes, while cardsharps, bandits, and businessmen seek to deprive those who strike gold by means fair and foul. Legendary former lawman Seth Bullock plans to keep the peace by any means necessary—especially when his good friend, President Theodore Roosevelt, is expected in town to celebrate the anniversary of Deadwood's founding.

Once, Frank Morgan had a wife and a future on the land - until a rich man with a grudge drove him out of Colorado. Since then, Morgan's taken up the one skill that always came easy - gunfighting - and drifted to a mining town in the New Mexico Territory. But there's nothing easy about two vicious gangs descending on the town and threatening to wreak havoc. With his reputation preceding him, Morgan is elected to stand in the outlaws' way. And with nothing left to lose, he's the last man who will ever back down....

Sixteen-year-old Henry was ejected from the enormous St. Martin ranch and told never to return, or he would be shot on sight. He vowed to return and seek revenge against the entire family. When he finally returned, it wouldn’t be as Henry St. Martin, it would not be as a 16-year-old boy seeking justice for his mother, but as a hardened lawman with the name of Alex Paine.

After spending most of his young life driving cattle from Texas to Nevada, Will Tanner is ready to wash the trail dust from his throat. Maybe it was fate that brought him to the Morning Glory Saloon on the border of Indian Territory - or just plain bad luck - because right after his sits down three rough-looking characters walk into the bar with vengeance in their eyes, guns at their sides...and fingers on their triggers. The trio's target is the famous US Deputy Marshal Dove who arrested one of their kin - and who's sitting in the bar near Will Tanner.

He's the son of a cattle rancher. A restless young dreamer who, under normal circumstances, would follow in his father's footsteps. Normal, however, is not his style. Like his famous grandfather and namesake Perley Gates - a hell-raising mountain man with a heavenly name - young Perley wants adventure, excitement, and freedom. And like his grandfather before him, he will find his dream - in the untamed wilds of a lawless frontier. That dream though might just become a nightmare....

Sixteen-year-old John Grady Cole's grandfather has just died, his parents have permanently separated, and the family ranch, upon which he had placed so many boyish hopes, has been sold. Rootless and increasingly restive, Cole leaves Texas, accompanied by his friend Lacey Rawlins, and begins a journey across the vaquero frontier into the badlands of northern Mexico.

Once a respected lawman in Kansas and Oklahoma, Ty Brannigan ended his career as town marshal of Warknife while he was still young enough to marry, start a family, and raise cattle. Now nearly sixty, he’s a proud husband, father of four, and proprietor of the Powderhorn Ranch. He’s more content wrangling cows than criminals. But for every outlaw Brannigan put in jail, noosed, or left to the vultures, he made even more enemies. They’ve made the mistake of targeting his wife and children—only to discover that Ty Brannigan enforces his own law with a lightning-fast draw.