I am a big fan of this series and thoroughly enjoyed this new addition. Love the mystery, the travel and the relationships. I think I read somewhere that this might be the last book in the series, but I very much hope it isn’t because I would keep reading train mysteries in new locations!
Really great for kids in terms of geography and science.

Thanks to Net Gallery for the Book.
I Quite Like Fictional & Non-Fictional Books about Trains but This Is the Book for Anyone who like those & Espionage & Adventure & Christmas.

This sixth book in the series has been much anticipated, and I was so grateful to get an early read from NetGalley. Well, I can tell you now that it’s been worth the wait. Once again Uncle Nat and Hal join forces to tackle crime - this time to stop a deadly code from being passed on. The night train journey from Stockholm to Narvik is eventful and full of surprises and kept me reading and not wanting to stop! Once again Hal’s sketch book and powers of observation proved invaluable towards solving the crime. Elisa Paganelli has produced beautiful pictures to bring the story to life.
It feels like this might be the last one of Adventures on Trains - I might just have to go back and start again at the beginning. Thank you so much Maya and Sam, your writing is fabulous.

Hal and Uncle Nat are channeling their inner James Bond on this high-stakes journey to the frozen north. With danger around every turn, readers hardly have time to catch their breath before the next threat comes charging down the tracks!

Hal (now 13 years-old!) is flying to Stockholm to meet his uncle for a once in a lifetime trip to the Aurora Sky Station to see the Northern Lights. It’s nearly Christmas so the days are short with polar night adding to the mystery in the air. Morti, Uncle Nat’s friend, has just won the Nobel Prize for medicine. She has discovered a way to treat illness using SONAR. The trouble is, someone else wants to use the same science for evil.

In Danger at Dead Man’s Pass (book 4 in the Adventures on Trains series), we learned about Uncle Nat’s mysterious past. In this new adventure, his Cold War connections lead the pair into very real danger. This extra layer to the story is incredibly intriguing – I want to know more about Uncle Nat’s life before the train mysteries began!

The descriptions of Sweden are stunning. There are fantastic geographical connections to be made. Having grown-up in Canada, I know that snow is never just snow. There is so much movement and sparkle, so many different consistencies and levels of cold. Sam Sedgman and MG Leonard capture this from both inside the train and outside on the ice. I love the connections to the Sámi culture and their relationship with reindeer.

Hal’s drawings continue to be essential in his crime-solving abilities. He uses them as time to think and as evidence of what he’s observed. Elisa Paganelli’s illustrations are a huge part of what makes this series so special. She has cleverly helped Hal to grow in maturity and skill with each book.

As with the other five Adventures on Trains mysteries, you never know who you’re going to meet or what will happen next. The action never slows, not even for a moment. Readers have no choice but to hold on for the ride, breathlessly searching for clues and trying to find the answers before it’s too late.

Thank you to Macmillan Children’s Books and NetGalleyUK for a sneak peek at this incredible book. My son is ready to climb onboard at bedtime tonight!