I recently finished 'Drood' by Dan Simmons, a highly fictionalized account of this final period of Charles Dickens life. The novel was a bit heavy, and at times slow but overall very fascinating and unsettling. It's half historical fiction, half supernatural psychological thriller.
Despite the far fetched premise, I think it gives a good look into the time period.
https://en.wikipedia.org/wiki/Drood_(novel)