On a fast-moving train is a sack full of money, carefully watched by the chief inspector. But he can’t resist taking a nap – and somebody pulls the emergency brake. The money is missing! Lasse and Maja suspect that the thief is still on the train.

Martin Widmark and Helena Willis bestselling The Whodunit Detective Agency series has sold over 12 million copys worldwide. Meet Lasse and Maja, who runs a small detective agency together, in a series of puzzling mysteries for primary school readers. The stories are set in and around the small town of Valleby, and have a rich gallery of characters to be captivated by on the exciting road to solving the mystery.

The Train Mystery is the seventh installment in the series with Lasse and Maja.