Mark Frost, creator of Twin Peaks, immerses us in a foggy Victorian London, where secret societies pull the strings of power, plots are woven in the shadows, and a young Arthur Conan Doyle faces a threat that blurs the lines of reason.

Christmas 1884. The young doctor and aspiring writer Arthur Conan Doyle is invited to a séance in a house in London's East End. The evening takes a macabre turn when two people are brutally murdered, and Doyle himself is nearly killed. His savior is Jack Sparks, an enigmatic adventurer and master of disguise who claims to be a special agent in the service of Her Majesty Queen Victoria. Sparks reveals to Doyle that he has been targeted by a sinister sect of Satanists known as the Dark Brotherhood.

United by danger, Doyle and Sparks embark on a thrilling chase that takes them from the dark alleys of London to the farthest reaches of Europe, facing threats both human and supernatural. Their only clue is a list of seven names: the leaders of the Brotherhood. Along the way, they encounter occult societies, practitioners of black magic, gargoyles that come to life, mad scientists, and iconic figures like Madame Blavatsky and Bram Stoker. The fate of the British Empire hangs in the balance, and only they can prevent its fall.

The List of Seven is a feast for lovers of 19th-century serial fiction, a kaleidoscope of adventure in which a young Conan Doyle, still far from fame, finds himself caught in a spiral of enigmas. Amidst the glow of gas lamps and the echo of footsteps in deserted alleyways, Mark Frost pays homage to Victorian adventure novels, with a plot that keeps the reader on the edge of their seat until the very last page.