Cold stone and ivy by H Leighton Dickson.
 Jack the Ripper gave her his heart. Now he wants it back.
The year is 1888, the clockwork British Empire is crumbling and young writer Ivy Savage has literally received a heart in the post. Terrified, her father sends her north to a strange sanitarium in Lancashire where the brilliant but unpredictable “Mad Lord of Lasingstoke” makes his home.
Here, Ivy finds the dead are as dangerous as the living and she is immediately swept into a world of manners, mystery, and supernatural intrigue, uncovering a secret that will lead both her and the Mad Lord back to London and the dark streets of Whitechapel.
An absolutely fantastic read with brilliant characters. I loved ivys character. I also loved franny and fanny.  How they were together.  Brilliant. I don't normally read historic but I do love anything with the ripper in it. Didn't see that coming. And what an ending. I do hope there is more to come  5*.