In the heart of London's Portobello Market lies a secret that could shatter his world for good. When Lukas discovers an old pack of Tarot cards in a store time forgot, he never could have imagined that a simple card reading would tear open the fabric between worlds. Reality fractures. London warps into Arcanum-a haunting mirror of the city he thought he knew, where buildings whisper secrets and friends become living archetypes. Everything seems familiar, but the air has changed... and everyone he once knew? They're different. That street performer? He's The Fool incarnate. The elegant woman in the black coat? The High Priestess herself. Welcome to a parallel London where every card he's drawn now walks amongst the living. With an ancient tortoise as his unlikely guide, Lukas navigates a world where shadows hunt and The Devil offers seductive power at a terrible price. As the boundaries between reality and magic blur, he may just discover that some doors, once opened, can never truly be closed.