Rivers of London

Probationary constable Peter Grant aspires to be a detective in London's Metropolitan Police but is initially assigned to a mundane role in the Case Progression Unit. His fate changes after a mysterious murder when he encounters a ghost who shares vital information. This newfound ability to communicate with the dead catches the attention of Detective Chief Inspector Thomas Nightingale, leading Peter into a dangerous world where magical forces and ancient evils threaten the city amid a series of bizarre murders.