In this parallel Victorian era, the British Empire stands at the height of the Steam Revolution. Mechanical gears and smoke-belching chimneys dominate the city skyline. Yet beneath the prosperity, dark currents stir: the Industrial Revolution unleashed not only productivity, but also forgotten ancient taboos and mysterious beings from another dimension. “Sequences” are this world's system for classifying supernatural powers, with each Sequence representing a different path to power. They range from the “Truth Weaver” (the Detective Sequence) and the “Child of Steam” (the Mechanical Sequence) to the Cthulhu Mythos-inspired “Whisperer of the Abyss” (the Occult Sequence) and the “Blood Crest” (the Noble Sequence), which commands the power of bloodlines. Advancement requires taking special potions and completing dangerous rituals. Lose control, and the power will devour you, transforming you into something inhuman. London, the City of Fog, is both the jewel of industrial civilization and a maelstrom of mysterious events.
