A stage manager must uncover a killer practicing occult rituals before the Lyceum Theatre becomes a stage for further tragedy. March 1881 London is electrified by the prospect of Edwin Booth and Henry Irving sharing the Lyceum stage, but stage manager Harry Rivers is consumed by a missing actress and a disturbing tarot reading. When the actress's body is discovered, marked by the signs of an occult ritual, Bram Stoker, the theatre's manager, believes a dark force is at play. Harry must navigate the theatrical world and the burgeoning investigation into a pernicious plot that threatens the cast and crew, all while confronting the possibility of dark magic.

The premise sets up a historical mystery interwoven with occult elements, suggesting a narrative that balances period detail with supernatural suspense. The focus on a theatre setting and a cast of real historical figures like Bram Stoker and Edwin Booth indicates a rich atmosphere and potential for character-driven intrigue. The inclusion of tarot readings and ritualistic clues points towards a plot that will likely explore themes of magic, superstition, and the darker aspects of human nature within the Victorian era. The resolution will depend on Harry Rivers' ability to unravel both the mundane and the mystical threads of the crime.