Stevenson, Steve

Twelve-year-old detective Agatha Mistery and her cousin Larry, follow the criminal who set fire to a scientific laboratory in the Amazon jungle after having stolen a sample of fungi that could solve the problem of global pollution.

Larry and Agatha were preparing for Christmas Eve when cousin Darren appeared on the doorstep of the Mystery House. He asks the young detectives to help investigate a case handled by their ancestor Leonard Mystery. This is how Agatha and Larry's new adventure begins. They will visit the family crypt in Highgate Cemetery, go down a tunnel to an underground river and even end up in Buckingham Palace! The hunt for evidence becomes more and more interesting with each passing hour!.

Twelve-year-old detective Agatha Mistery travels to New York to participate in the Big Hunt which brings the best detectives from all over the world to compete against each other.

"The life of the famous Mr. Kent, the butler of the Mystery House, is in danger! Underworld kingpin Morton Mystery, the lousy sheep of the family, has kidnapped him and only agrees to return him in exchange for an investigation into the 'Christmas heist'. The fact is that on the night of December 24, someone robbed the museum and . . . framed Morton himself! Agatha and Larry are forced to get down to business . . ."--Google translation of synopsis from OCLC.

Larry travels to Lisbon to investigate the murder of a ceramic artist.

Larry goes alone to investigate the theft of an ancient Jade dragon from a museum in Beijing, China, because his cousin Agatha is sick. But when Larry is suddenly kidnapped, Agatha must find a way to help him.

"Agatha and Larry Mistery investigate the theft of a valuable diamond in the rough from an auction house. The trail leads them to Amsterdam, where they participate in a complicated investigation, aided by Grandmother Jubilee and their dog Sherlock"--OCLC.

"Agatha Mistery and her cousin travel to Venice to investigate the theft of an ancient crown during the Carnevale celebrations."--Provided by OCLC.

"As Agatha and her cousin Dash try to enjoy a sightseeing cruise on the Norwegian Sea, they find themselves caught up in a web of spies and deceit. A secret document has gone missing, and Agatha has to find it before the ship docks"--Back cover.

A priceless Mayan calendar made of solid gold has gone missing in one of the most mysterious places on Earth. Now Agatha and her cousin Dash have to contend with something bigger than a greedy and dangerous criminal--a daring new mystery that sends them to the heart of the Bermuda Triangle.