Joan Lowery Nixon

Nineteen-year-old Frances Mary Kelly, herself an orphan train rider six years before, returns to New York and agrees to escort a group of orphans west to find new homes.

Sean and Matt were playing harmless pranks on the school computer, but now someone is up to real mischief and Sean is getting all the blame. First someone programs all the school bells to go off continually, then the school computer is infected with a virus. When Sean starts getting threatening messages at home, it's time for the Casebusters to jump into action.

While on vacation at a dude ranch, the Casebusters chase a horse thief
Sean and Brian Quinn can't think of anywhere cooler than the Austin Dude Ranch. Although neither has ever ridden a horse, they're positive that playing cowboy is going to become their favorite pastime. But before they can learn to rope and ride, they're going to have to practice their other favorite hobby: solving mysteries. A racehorse has been stolen from the neighboring...

The Casebusters investigate accidents at an abandoned theater—where a ghost is the chief suspect!
Ever since the new mall opened on the other side of Redoaks, the area around the historic Culbertson Theater has been abandoned. But when a local developer wants to bulldoze the area and turn it into a shopping center, someone inside the theater decides to take matters into his own hands—hands that may be alive or dead. After...

In 1902 fifteen-year-old Rose travels from Ireland to join family members in Chicago, where she must use all her resources to deal with her father's drinking and her brothers' dangerous involvement in politics.

Jenny and her mother hunt a killer while fearing for their own safety, after the reading of their millionaire cousin's will leads to the murder of another cousin.

On an island in the Mississippi River, a ghost and his dog stand guard
When their aunt buys an old, run-down inn on the banks of the Mississippi, Chris and Amy Holt go south to help her fix up the place. They lend helping hands during the day, but at night, they wonder about the island in the middle of the river—a mysterious place where the townsfolk will not set foot. The island was created by an earthquake which shook the ground...

On a walk in the woods, Sean and Brian find a scary footprint
Sean Quinn does not like the sound of spending a weekend in a neighborhood named Grizzly Hill. Although his friend Alan assures him the development has been bear-free for a century, Sean is not convinced. The woods are thick and dark, and there's an old grizzly den not far from Alan's house. And when Brian discovers a strange footprint on a forest path, Sean starts to wish he...

When a spoiled kid disappears, the Casebusters go spelunking with a pirate's ghost
Sean and Brian Quinn have never liked Lester Hopper. The seven-year-old is spoiled rotten, and looks down on every kid he knows—even the ones who are taller than him! But one night, Lester disappears and a ransom note warns the Hoppers not to contact the police. The Casebusters are going to need to solve their most serious mystery yet—a possible...

When the circus comes to town, a clown and his monkey get into trouble
Kid detectives Brian and Sean Quinn are on their way home when they see a clown causing a commotion outside the mall. The Star-Spangled Circus has just rolled into town, and Crackers the clown and his faithful monkey are there to promote it. But just as Sean is about to get a good look at the monkey, it escapes its collar and runs off, leading a frantic chase through...