This book helped me a lot yesterday. You want to look for it on December 3rd if you, too, could use a sapphic ghostie-timeslip romance with a theatrical setting, an awesome dog, emerging friendships, and a whole lot of 1920s style.
It‘s great stuff. The old theatre‘s fascinating. The friendships ring true. The mystery unfolds at a good pace. The ghost-rules push the plot in interesting directions. The dog is a delight.
Definitely recommended.