Alison discovers it's the birthday of the mansion's deceased former owner, Sir Henry, and the ghosts prepare to celebrate. However, their plans are put in jeopardy when Alison becomes a point of contention among the ghosts. Meanwhile, Chas tries to help a lost dog find its owner, and the truth about Tom's death begins to unravel.
While Sam tries to maintain a normal dinner, the spirits stage a "non-violent protest" that quickly turns into a flickering light show and ghostly brawls. ghosts s01e04 x265
Watching this in is actually the ideal experience. The episode relies heavily on two things that the codec handles beautifully: Alison discovers it's the birthday of the mansion's