A chill wind blows through 1920s Uppsala, but it's not just the Nordic winter that bites in the seventh gripping installment of The Travelling Detective series.

At the discreet behest of his brother Mycroft, Sherlock Holmes, with the ever-faithful Dr. Watson by his side, ventures into the ancient heart of Sweden. Their mission: to investigate the baffling disappearance of the Gustafsson Rune Stone, a priceless artifact whose newly revealed inscriptions hint at a truth that could shatter Sweden's understanding of its own origins.

Plunged into a world of secretive academics, zealous theorists, powerful industrialists with hidden agendas, and one courageous archivist fighting for forbidden knowledge, Holmes must unravel a cipher centuries in the making. The missing stone is more than an antiquity; it's a key to a lost sanctuary and a politically volatile message that some will stop at nothing to control, suppress, or even destroy.

As Holmes navigates a labyrinth of cryptic clues, academic rivalry, and carefully guarded secrets, he uncovers a legacy of suppressed truth stretching back generations. Can the world's only consulting detective decode the "god-stone's song" before a potent historical narrative is lost forever, or worse, deliberately perverted?

Join Holmes and Watson as they race against time and powerful forces in Sherlock Holmes: The Rune Stone Cipher, a thrilling adventure where ancient runes conceal modern dangers.