Upstairs: the wealthy, aristocratic Bellamys. Downstairs: their loyal and lively servants. For nearly 30 years, they share a fashionable townhouse at 165 Eaton Place in London’s posh Belgravia neighborhood, surviving social change, political upheaval, scandals, and the horrors of the First World War.

A Scotland Yard investigator looks into four mysterious cases involving an unoccupied house.

A noted professor and his dim-witted apprentice fall prey to their inquiring vampires, while on the trail of the ominous damsel in distress.

When a boy discovers that both his parents are in prison, he sets out to find them.