Cloister Bell

An integral part of the TARDIS's early warning system, the Cloister Bell is the ship's auditory alarm designed to signal critical system failures or imminent threats to temporal stability. Its tolling serves as an unmistakable clarion call, demanding immediate attention from the crew. Though unseen and often unacknowledged when inactive, its sound cuts through ambient noise with mechanical urgency, designed to redirect focus toward imminent danger. In moments of crisis, its rhythm accelerates in proportion to the escalating threat.