Amy and Christopher are twins AND international sleuths. Their eco-photographer parents travel often. So the twins fly to meet them.Christopher loves drawing. He draws people and places. And often he notices unusual clues.Amy reads and thinks quickly. She also collects coins, stamps, stickers, phone cards and clues.Together they solve mysteries in the air and at international airports.

Amy and Christopher, the Frequent Flyer Twins, are on their way from Singapore to Cairns, where the International Games are going to be held. But more than one lot of games are being played!Amy and Christopher have heard that someone is smuggling steroids in on their flight. All passengers are suspects. So are the airline staff.Something doesn't add up, but what is it? The Frequent Flyer Twins are just the people to find out.

Art the part-time spy is at it again, and this time he's got birds on the brain.Mr Snippet's Crested Featherfoot Fantail is missing. It's his best bird and unless it's found, his wedding birds-for-hire service might go out of business.Art loves to be faced with a problem and he sets out to catch the thief, with help from his friend India (when she's not collecting dog droppings for her science experiment) and, as usual, no help from Mars Bar!

If you're the kind of person who never wins anything, and then you win a giraffe, you've got a problem.Of course, if you're a part-time spy like Art, you're ace at solving problems.But keeping the news of the giraffe from his Mum isn't the only thing on Art's mind.His friend India thinks she's uncovered a dog-snatching scam, and Art agrees that if she helps him hide his giraffe, he'll help her sort it out.Art's not keen on reading, but...

Sleuth Astrid is a hi-tech chook, who rides a Harley, plays e-games and finds lost things.The Magician has lost his sense of humour. Astrid must find that before the 3pm show. Luckily, Astrid is also a mind-reading chook.

Slipper orchid' was the clue. But is it a flower, a pirated cassette or a group of smugglers?Pirated cassettes, tiger bones for traditional Chinese medicine, and the T-shirted gnome interest the sleuths Amy and Christopher as they leave Singapore's Changi Airport.Along the way, they discover some idea pirates and solve a mystery.

It was the Grand Final on Saturday. Carrot the Parrot was the Coach for the Birds' team. But he'd lost his voice. Sleuth Astrid had to find it, in time for the Grand Final because the team needed the Voice of the Coach. Was the Voice captured in the TV 'Footy' studio? Lost down his throat? Was a Voice Coach any use? What about the Speakeasy? Or the Voice-over on the TV Footy panel or on Talk-back? And then there's the Bird Wedding of the Year. Carrot was supposed to be the MC (Master of Ce...

Trekking with their eco-photographer parents, Amy and Christopher suspect a thief on New Zealand's famous Milford Track.Is it Ms Tree, the Freedom Walker? Other suspects include a keen golfer, a rugby international and Zoe, the guide. When a mischievous kea bird steals from the twins, they change their minds. Dr Al, the celebrity explorer is being filmed on the Track, by their parents. Could he be involved in illegal kea or nugget smuggling?Backpack mix-ups, a loo-with-a-vi...

On Tournament Day, teams solve problems. Art the part-time spy doesn't want to take part. He's not keen on reading and he can't spell TOURNAMENT, but he's good at solving problems. His friend India makes him join her Tournament of Minds team. They get ready to present their problem. But then thieves try to steal secrets from the university. With India's help, Art solves an unexpected mystery. Tournament of Minds is where problems are solved, and Art is a great problem... Solver.

When their Tokyo plane is grounded in Sydney, due to cabin mist, the Frequent Flyer Twins become involved in an oriental antique mystery. What is being artnapped? Why are security guards watching the Rembrandt? And why is the dealer so interested in Amy's phone card collection?There's a mix up with photos. What has happened to photographs of the newly married Japanese wedding tourist group? What about Tess, the art student who is working her way around the world? She can draw very ...

From his hot air balloon flight over the zoo, sleuth Art sees something suspicious that later helps him solve a mystery.As winner of talkback radio's 'Going Up' competition, quiz whiz Art shares the prize of a hot air balloon flight with mates India and Mars Bar. It's India's birthday soon and Art hasn't bought a present. Mars Bar comes regardless.The prize must be used at 4.30am next morning, but 9.am sharp on Wednesday is Mrs. Tasker's class visit to the Zoo. Luckily the ...