Why does the gaslight flicker so ominously in Mrs. Manningham's house? And is she really losing her mind?

Twenty years removed from Alice Barlow's murder by a thief looking for her jewels, newlyweds Paul and Bella Mallen move into the very house where the crime was committed. Retired detective B.G. Rough, who worked on the Barlow case, is still in the area and grows suspicious of Paul, who he feels bears a striking resemblance to one of Barlow's relatives. Rough must find the truth before the killer can strike again and reclaim his bounty.

Returning to 1870s London after finishing at boarding school, Fanny winesses the death of her father in a fight with Lord Manderstoke. She then finds that her family has for many years been running a bordello next door to their home. When her mother dies shortly after, she next discovers that her real father is in fact a well-respected politician. Meeting him and then falling in love with his young advisor Harry Somerford leads to a life of ups and downs and conflict between the classes. Periodically the scoundrel of a Lord crosses her path, always to tragic effect.