Cross Blackfriars Bridge at twilight and think about Dementors drifting above the Thames

https://www.scribd.com/document/997518056/Best-Time-to-Visit-Platform-9-and-the-Harry-Potter-Shop-at-King-s-Cross-142331

Cross Blackfriars Bridge at twilight and believe Dementors drifting above the Thames, as urban lighting fixtures flicker like lumos within the fog.