接受培训的年轻记者Kate和她的老鼠同伴Rupert登上火车，去北极看望她的妈妈。

但火车一开，神秘的事情就开始接连发生。

一包姜味坚果不见了......

一系列体操奖杯被盗......

还有一些古老的卷轴消失了......

同行的乘客 Maude 夫人似乎是**嫌疑犯，直到令人惊讶又耐人寻味的转折让整个调查陷入困境。

这是诙谐的双色章节书系列的**本书，讲述了一个大胆的年轻侦探和一群各种各样的嫌疑人，其情节设定精彩堪比阿加莎·克里斯蒂 （英国女侦探小说家）。

Young reporter-in-training Kate and her mouse-

accomplice Rupert are on board a train, to visit Kate's mum in the Arctic.

But as soon as the train departs, mysterious things start happening.

A packet of ginger nuts goes missing . . .

A collection of gymnastics trophies are stolen . . .

And some ancient scrolls disappear . . .

Fellow passenger Madame Maude seems the most likely culprit, until a surprising - and delicious - twist turns the whole investigation on its head.

First in a witty two-colour chapter-

book series about a bold young detective and a colourful cast of suspects, in a setting worthy of Agatha Christie.