Travelling à la Maier is probably not everyone's idea of fun, for it requires nerves of steel! The Maiers won their trip as a prize for a crossword puzzle and they are now being carted all over Europe by the travel agency Crazy Tours - from Munich to Amsterdam on a double-decker bus, then on to ...

Although Gitta Gurke and Kalle Bohne are very good private detectives, they would welcome some help. You can assist them in solving forty different mysteries, but don't think it is going to be easy. You will have to watch very carefully for visual clues. You will be required to figure out some ...

A big omnibus edition of the two previous titles takes family Maier and the readers on a mind-spinning trip around the world. At the various different destinations during their trip around the world, family Maier has all sorts of impossible things happen to them: who stole the Eiffel Tower from ...

Inspector Schrödinger and his colleague Teufel are confronted with a series of mysterious thefts. The thief seems to operate entirely at ramdom - as soon as the detectives think they're on his tracks, he pulls the rug from under their feet again. But he hasn't reckoned on ...

Any child knows that the lead up to Christmas is full of secrets and surprises. But no one could have possibly imagined the mysterious goings-on that the inhabitants of Numberville have to contend with: the judges have to calculate how many dominoes the defendant devoured, a special ...

Amazing Christmas puzzles from around the world for you to help to solve

Father Christmas has lost his notebook, which contains all the information about Christmas customs in other countries. This is a real disaster! So Helge the reindeer is sent off on a ...

»Let's go to America!«

When Kalle and Gitta go to New York they only mean to visit Aunt Betty and her parrot Pepper, but evil lurks everywhere and at all times. So the two of them are soon embroiled in three new cases. »Stop thief!« Learning English has never been so exciting.

This time, Gitta Gurke and Kalle Bohne are on the trail of really crafty crooks ... and as always, the assistance of all detectives from age 9 onwards is urgently needed!

There are three big cases to be cracked this time:

A precious gem has disappeared from the Motzenstein museum.

One trip round the world, Puzzle Class, please!

The fact that the Maiers have a rather unconventional approach to travelling is no secret to their fans who have read 'Maier's Fabulous Mystery Tour'. But this time they are really going overboard: Aunt Trude, who has ...

How many times have the two private detectives Kalle and Gitta been on the move in search of the truth! Now the master detective duo has three tough new cases to crack once again:

Don Tamasi the Forger manages to escape from prison - and, of all times, just a few days before the ...

The detective is afoot, always hot on the trail of some dastardly crime. And never very far behind is his son Lukas, who is pretty intrigued to figure out how his father is going to solve these 13 baffling cases. Some gangsters really get a kick out of deviously coding their messages - can you ...