Sam and Annabel are visiting Drumheller, Alberta, where the farmland Sam’s mother lives on is host to a dinosaur dig. Annabel, an avid learner, is thrilled to have access to paleontologists and spends as much time as she can near the dig, much to Sam’s dismay. But when they learn the dig has uncovered scientifically important bones, even Sam’s interest is piqued. In fact, the whole town is talking about the dig. When Sam and Annabel learn that Humphrey Battleford, a famous collector of stolen goods, is in the area, they are on high alert to keep the ancient bones safe.
Fifteen-year-old Christine is visiting her eccentric great-aunt in historic Witcombe, where a pickpocket has been victimizing tourists. Aunt Maude owns an antique store and also runs the town’s ghost walk, which gives Christine the opportunity to meet local characters and visitors, including a mysterious young man who seems to know far too much about the crimes. When the pickpocket targets Aunt Maude’s store, Christine is determined to find out who is behind the thefts. Her search takes her through the nooks and crannies of the quaint town full of stories, and she unearths more than one surprise.
Trevor has started his first job at Ashton's Fresh Marketplace, where someone has been tampering with the food. Cayenne has been sprinkled on cookies, garlic put in coffee, and plastic insects hidden in fruit displays to terrify customers. Trevor and his friends Nick and Robyn decide to find out who is out to destroy the store's reputation. Is it Mattie, the disgruntled ex-employee? Or perhaps the competition? Or is it Alex, their schoolmate who doesn't know when a joke has gone too far? Their snooping makes the kids themselves seem suspicious, and soon they realize they have to solve the mystery before Trevor gets fired for a crime he didn't commit.
On a visit to a seaside town in Australia, fifteen-year-old Sam meets Annabel, who works at the local museum. Annabel's interest in history is infectious, and Sam soon finds himself eager to hunt for the remains of a boat called the Mahogany Ship—a shipwreck sought after by many. When a storm creates an erosion hole that exposes a structure, Sam and Annabel are convinced it's the fabled ship. Soon all of the museum staff are at the erosion site to check it out. But the same storm also destroys the museum's power; someone knows the alarms aren't working and steals the museum's most treasured artifact, a large porcelain peacock worth $4 million. As Sam and Annabel search for the thief, they realize there may be a link between the fabled shipwreck and the recent theft.
Dylan and his friends attract the attention of the police when a summer bonfire gets out of control. Dylan almost loses a job opportunity at a local inn because of his antics, but he is saved by the lies of Heather, an employee of the inn. When he is caught on camera stealing towels from a summer cottage after a skinny-dipping prank, Dylan and his friends become suspects in a number of cottage robberies. Dylan learns everything he can about the robberies, with the hope of clearing his name, and finds himself in more than one sticky situation in the process.
Chloe McBride has some reservations about accepting her elderly great-aunts' invitation to spend part of the summer with them in Little Venice, but her initial reluctance is outweighed by her curiosity about the mysterious key that came with her aunts' note. She's also anxious to put the humiliating memory of a disastrous piano recital as far behind her as possible. Chloe's great-aunts tell her the legend of her great-grandfather, Dante Magnus, an ambitious magician who vanished without a trace almost a century earlier, and Chloe begins to search for clues to his disappearance. When her investigations eventually lead her to a mysterious rosewood box, which has been hidden for almost a hundred years, Chloe's belief in the power of magic forces her to confront her own fears and ambitions.
Sam Stringbini, the youngest son in a family of circus performers, is living every kid's dream, except for the fact that he is no good on the high wire, trapezes freak him out and magic mystifies him. When the Triple Top Circus is threatened by repeated acts of sabotage, Sam is the number one suspect. To clear his name, Sam enlists the help of his cousin, Harriet, and discovers that, while he may never be a sword-swallower or a lion-tamer, he just might be able to save the circus.
With seconds to the finish line, Dalen and Gole lead the distant world of Budap's annual Junior-Jet Race. Suddenly they are overtaken. Left behind in a cloud of mysterious purple exhaust, they realize something doesn't add up. Looking for clues, the two friends uncover a tunnel that leads them to Earth. They arrive in Port Angus, once a lively west coast fishing community. The fishing industry is dying, and Dalen and Gole find themselves embroiled in a sinister plot to steal fish and send them to Budap. Pursued by government agents and angry aliens, Dalen and Gole are in a race against time to save both their own distant world and the fishing community of Port Angus.
Clay would much rather work as a lifeguard at the beach than at Safari Splash, the new water park in town. He's certain the summer will drag along, despite his position at the Boa, the park's fastest slide. The summer job starts to get interesting when he learns that someone has been wandering the park in a lynx costume, scaring the staff. When forty thousand dollars is stolen from the till, and his friends are under suspicion for the theft, boring is starting to look good. But Clay is certain that the mask and the thefts are connected, and he's determined to solve the crime.