Through an examination of the ghost story included within G. W. M. Reynolds’s The Mysteries of London (1844–56), this chapter challenges the well-established belief that mid-nineteenth-century ghost fiction is fundamentally ideologically conservative. Addressing metropolitan expansion and suburbia’s unstable identity, The Mysteries of London’s ghost narrative develops and recontextualises the notion that mid-century haunted-house fiction symbolised the erosion of suburban ideals. Where within mainstream ghost fiction, writers capitalised on fears relating to immorality amongst the “respectable” classes only to ultimately confirm that such behaviour was anathema to suburbia, Reynolds refuses to invest the suburban space, or the middle classes, with inherent morality (or, conversely, to equate the working-classes/urban spaces with vice). Employing the strategies of radical journalism, The Mysteries of London undermines class-based moral hierarchies and discredits the moral benefits of Victorian domesticity. Reynolds anticipates and repurposes the dynamics of mid-century ghost fiction in service of a radical political agenda.