Synopsis

Twins Timo and Albert could not be more excited – they have managed to get their best friend Kaspar a birthday present he will never forget: a mobile phone for his seventh birthday. They spent all their savings on it, buying the phone from a lady they met on the street.
But when Kaspar unwraps his present, he is far from pleased – his parents have just given him a brand-new phone of his own. Kaspar’s father suspects that the boys’ gift might actually be stolen; after all, no one would sell such a phone for only nineteen euros.
Determined to set things right, the children – with help from Kaspar’s older sister, Mia – decide to return the phone to its rightful owner.

This book is the second in the City Kids Detective Series.