Writing my novel THE WITCH AND THE HOUND

Now the novel is THE WITCH AND THE HOUND

It takes place in the late Victorian period in London, England, where a lady of high society is born a Witch, and with the help of a supernatural Hound starts hunting criminals.

I am hoping it is going to be the first novel of a series, which I am planning to title THE WITCHES GUILD.

Changed my Novel Title from “Visitations” to “The Witch and the Hound”

Since the novel is about a Witch and a supernatural Hound that want to catch a serial killer, I decided to change the title of the book. It is a more interesting title.
I am also moving the timeline from the present day towards the past, I haven’t decided yet where to put the time and place.
I have three possible scenarios:
1. London, around 1864, Brittania is at the height of its power.
2. New York, circa 1898, at a time where the city (and its criminal elements) were growing by leaps and bound.
3. London, around the 1920s, with criminals, spies and crime ridden neighborhoods.

Maybe you can tell me which scenario sounds more interesting.