Robert 'Bertie' Bellthorpe is one of your oldest and dearest friends, and one of the friendliest and most sincere people you have ever met. He has run his quiet family bookshop for years, and is usually to be found next to the fire with his nose deep in a book and a mug of tea in his hand.

But earlier today you received a chilling letter suggesting that not only is Bertie's life in danger, but that somehow he has become involved in a sinister plot with global stakes! The question is simple - do YOU have what it takes to follow a trail of clues around the world to track down the mysterious Brotherhood, and find your friend?