Richard Mayhew is a man defined by his adherence to the unremarkable. A transplant to London with a sensible job, a demanding fiancée, and a collection of glass trolls, his life is governed by the predictable rhythms of the mundane. However, his reality fractures the moment he chooses a single act of kindness over social convention. By stopping to help an injured, blood-streaked girl on a sidewalk—a girl whom everyone else seems unable to even perceive—Richard inadvertently severs his tether to the world he knows. He becomes invisible to his colleagues, his landlord, and his own life, effectively "falling through the cracks" of London.

To reclaim his identity, Richard must descend into London Below, a subterranean mirror-city where the discarded and the forgotten have built a society with...

Richard Mayhew is a man defined by his adherence to the unremarkable. A transplant to London with a sensible job, a demanding fiancée, and a collection of glass trolls, his life is governed by the predictable rhythms of the mundane. However, his reality fractures the moment he chooses a single act of kindness over social convention. By stopping to help an injured, blood-streaked girl on a sidewalk—a girl whom everyone else seems unable to even perceive—Richard inadvertently severs his tether to the world he knows. He becomes invisible to his colleagues, his landlord, and his own life, effectively "falling through the cracks" of London.

To reclaim his identity, Richard must descend into London Below, a subterranean mirror-city where the discarded and the forgotten have built a society with...