Ulf, Tita, Heiko, and Otto are classmates, best friends, and courageous detectives who can find any criminal! Or at least, they'd like to. But nothing interesting is happening around them... until one day, a new girl arrives in class. She's acting very suspicious: she dresses strangely, doesn't eat anything, performs incredible balancing acts, and buys tinfoil and plastic bottle caps in huge quantities. What if she's an alien? Only young detectives can get to the bottom of the truth!

German artist Tanya Ash invites readers on a captivating adventure that combines secrets, dangers, humor, and true friendship.

Author: Tanya Ash
Publishing House: Boomkniga
Year: 2021
Number of pages: 128
Cover type: paperback
Translator: Anna Rakhmanko
Illustrator: Tanya Ash
Country of origin: Germany
Age group: 7-9, 10-12