Just finished Viola Carr's
The Diabolical Miss Hyde, and quite liked it. I am pleased to note that it is presently on sale; it is currently $1.99 from the publisher. Available at
Amazon,
Kobo, and likely most other places.
Special bit of enjoyment: At the beginning of one chapter, there is a scene where lightning strikes a "mechanical carriage" (causing a coruscating blue effect) as well as a new clock tower. I cannot testify that the time was 10:04 PM, but this takes place exactly 88% of the way into the book.