At 3 am on the morning of 20 January 1917 , Ruby arrives at Eaton Place . She had been caught up in the Silvertown explosion the previous evening and the whole household listens to her story . Her lodgings have been destroyed along with all her possessions , and she decides to become the kitchen maid again . When Richard and Hazel go up to the Morning Room after this , Hazel says how there are two families living in 165 , Eaton Place . There is the Bellamy family , and then the family downstairs . Hudson and Bridges are the mother and father , Edward and Daisy their son and daughter-in-law , Rose is the elder daughter and Ruby the younger daughter . She then says " Perhaps one day , we 'll all be one big family , not two " . Richard replies " I think we are now in one sense "
Silvertown explosion
Silvertown explosion
Another Year (Upstairs, Downstairs)