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These four hi/lo short, high-interest mystery novels are written at a grade 4 readability level for students aged 10 to 14. They follow the adventures of teenagers Sam and Annabel - from small town Australia to Canada, the Arctic and Italy.
On a visit to a seaside town in Australia, fifteen-year-old Sam meets Annabel, who works at the local museum. When a storm exposes a structure, Sam and Annabel are convinced it's the the remains of a famous shipwreck. Then someone steals the museum's most treasured artefact, worth millions. Sam and Annabel soon begin to suspect that there may be a link between the fabled shipwreck and the recent theft.
Sam and Annabel are visiting Sam's mum in Canada on a farm which is hosting a dinosaur dig. Annabel is thrilled to have access to paleontologists and spends as much time as she can near the dig, much to Sam’s dismay. Soon the whole town is talking about an important discovery, but a famous collector of stolen goods is also in the area. Sam and Annabel realise they need to do their part to keep the ancient bones safe.
Sam and Annabel make a startling discovery when on a cruise to the Arctic which takes them past an archaeological dive site connected to the most famous mystery in Arctic history: the Franklin Expedition. Confronted by an old enemy, isolated and outnumbered, how can they possibly save the priceless artefact that may hold the answer to the Franklin mystery?
Sam and Annabel are on vacation with Annabel's parents in Italy. While visiting the small hilltop town of Civita, they hear rumours of looted gold from World War II buried somewhere in the town's network of underground tunnels and caves. After Annabel is kidnapped, Sam must solve the mystery of the hidden treasure to save his friend.
