After winning a contest, Dunc and Amos are off to a ski vacation in Vail, Colorado, where they will make their mark in more ways than one. By the author of Canyons. Original.

Dunc and Amos head for camp and face two weeks of fresh air—along with regulations, demerits, KP, and inedible food. But where these two best friends go, trouble follows. They overhear a threat against the camp director and discover that camp funds have been stolen. Do these crimes have anything to do with the tattoo of the exotic red flower that some of the camp staff have on their arms?

It's Christmastime! And Dunc, Amos, and Amos' cousin, T.J., hit the mall for some serious shopping. But when the seasonal magic is threatened by some disappearing presents and Santa Claus himself is a prime suspect, the boys put their celebration on hold and go undercover in the perfect Christmas disguises. Can the sleuthing trio protect Santa's threatened reputation and catch the impostor before he strikes again?

Amos wins a "Why I Love My Dog" contest, and he and Dunc embark on a Caribbean cruise, but they soon learn that someone is out to sabotage their dream vacation.

When Dunc and Amos are invited to spend a week in Scotland, Dunc can already hear the bagpipes a-blowin'. But when the boys spend their first night in an ancient castle, it isn't bagpipes they hear. It's moans! Dunc hears groaning coming from inside his bedroom walls. Amos notices the eyes of a painting following him across the room! Could the castle really be haunted? Local legend has it that the castle's former lord wanders the ramparts at night in search of his head! Team up with Dunc and Amos as they go ghostbusting in the Scottish Highlands!

During a trip to Uncle Woody's Santa Fe cattle ranch, Dunc and Amos overhear a plot to do Woody in, and the two young sleuths gear up to save the ranch. Original.

During a weekend in Washington, D.C., with their fifth grade class, Dunc and Amos come face-to-face with Amos' double, Prince Gustav of Moldavia, who asks Amos to switch places with him to uncover a traitor

Asked by their school principal to coach a local t-ball team, Dunc and Amos must contend with players who know nothing of the game, a sinister local gangster, and overanxious family fans. Original.

In helping an extraterrestrial get back to his planet, Amos hides him under his bed while he and Dunc think of what to do, until Amos starts displaying new powers on the football field, and Dunc thinks the mysterious alien is behind it. Original.

Dunc worries that Amos has gone too far when the latter dons a leather jacket, slicks back his hair, and adopts a nickname, in order to uncover a stolen stereo racket led by the tough new kid in school. Original.

Five . . . four . . . three . . . two . . . Olympic superstar Francesco Bartoli is about to hurl himself down the face of a mountain in another attempt to clinch the world slalom speed record. Cheering fans and snapping cameras are everywhere. But someone is out to stop him, and Dunc thinks he knows who it is. Can Dunc get to the gate in time to save the day? Will Amos survive longer than fifteen minutes on the icy slopes? Join best friends Dunc Culpepper and Amos Binder as they take an action-packed winter ski vacation filled with fun, fame, and high-speed high-jinx.

Willing to do anything for two tickets to the "Road Kill" concert, where he hopes for an evening of romance, Amos enlists the help of his best friend, Dunc, and learns of a mysterious culprit who is trying to sabotage the band. Original.

Amos is in love with Melissa, but when Melissa is suddenly interested in Amos, after ignoring him in the past, Dunc thinks something is fishy, in an adventure that features a Culpepper Cupid Quiz to test romantic know-how. Original.

Becoming the target of a gorilla's affections, Amos receives little support from his best friend, Dunc, who believes that the enamored Louise is the key to a really big case involving a respected senator. Original.

Anyone who knows Amos knows that in his case, dogs are definitely not man's best friends. Even his own dog growls and shows his teeth whenever Amos is around. Amos isn't exactly fond of Scruff either. It's a dog-eat-dog world. But when Scruff gets mixed up in a dognapping scheme, Amos and his best friend, Dunc, have to team up to spring him. Join Gary Paulsen's cool sleuths as they go undercover at the city pound!

Amos' big sister Amy is always dating rejects. But this time, her boyfriend was rejected by the grave! He's got pale skin, dark hair, mesmerizing eyes, an annoying tendency to disappear, and he wants to have the Culpeppers over for a late night Halloween snack.... Can Amos and his best friend, Dunc, stop the vampire before he starts to bite? Or will Amy and her man do a little necking she will never forget? Join Gary Paulsen's cool sleuths in their creepiest caper yet!

Youthful sleuths Amos and Dunc take on a new challenge as they match wits with the Chameleon, a master of disguises, wanted in five states and able to change her identity at will. Original.

With his trench coat, sunglasses, and debonair James Bond air, Amos Binder is mistaken for a double agent and given a top secret assignment to fulfill, and looks to his best friend, Dunc, to bail him out. Original.

Best buddies Dunc and Amos are at the winter sports events. A pretty skater needs their help to defect from North Korea, but suddenly Kim Su-Yong doesn't seem to remember asking the boys for their help. In fact, she's downright hostile. Does she have a split personality, or is something fishy going on here? Dunc and Amos are suddenly on...thin ice!

Dunc thinks Mr. Smith is just an old man who owns a junkyard and a mean junkyard dog. But Amos is convinced Mr. Smith is Lightning Man, a retired superhero, and the dog is his super sidekick. Meanwhile, Mr. Smith's sinister new neighbor, Professor Brainard, seems to be casting some kind of weird spell over the city council. Dunc and Amos have to do something before Professor Brainard cleans out the town's coffers. They sure could use some help. Too bad there's no such thing as a retired superhero and a retired superhero's dog!