Complex sentence: A thin black disc materializes in front of them and Emma senses something crying out for help as the ghost appears in a dark hallway crying for help and the Doctor takes pictures of it before the disc vanishes and the house returns to normal.
Split into simpler sentences: A thin black disc materializes in front of them and Emma senses something crying out for help as the ghost appears in a dark hallway crying for help. The Doctor quickly takes pictures of them before the disc vanishes and the house returns to normal.