There is a thief at Penny's school. Lunch money and phones keep disappearing. Even Ida's new phone falls victim to the thief when she leaves it in the changing room during PE class. The list of potential suspects is actually quite small: Penny's brother Tim, who twisted his ankle and had to limp ...

Hurray! Penny and her friends are taking a class trip to Burg Schlotterstein, which turns out to be a real haunted castle. A trapdoor opens up on its own. Half of the class gets lost in the maze. Bats fly through rooms. And as if inscribed by a ghostly hand, a strange message appears on the ...

As luck would have it, Penny's entire gang of detectives-including the two dogs Mailie and Dschastin-fetch up in the Italian town of Fiorente to spend their summer holidays together. And it's just as well, because there are strange goings-on in the luxury hotel where Flora's family is staying: ...

When Penny and her gang of detectives hear about the disappearing Christmas trees, they initially put it down to coincidence. But it soon becomes clear: this is the work of a serial offender. One tree farm is burned to the ground, another is afflicted by a peculiar disease, deliveries disappear ...

A new case for Penny Pepper!

On the day of the talent contest at Penny's school everything goes haywire: Rudi the computing rat is no longer in his cage, instead of cool rock music the sound system starts playing Bavarian folk songs-and just as Dschastin is about to put his ...

Penny, Ida, Marie and Flora have become an investigative tour-de-force by now, complete with their own tracker-dog - although it has to be said that Dschastin really prefers chewing shoes to chasing criminals.

The four girls certainly didn't expect their next case would be waiting for ...

Ten-year-old Penny Pepper has three big wishes-and about a million smaller ones! But the main ones are:

• a dog

• becoming a detective and solving crimes

• getting out of having to go to that stuck-up show-off Flora's party

Sadly, the third ...