The Strange Case of the Alchemist's Daughter (The Extraordinary Adventures of the Athena Club, #1)

by Theodora Goss

She and Watson looked at a sign on the gate, on which was written: A MISSION TO RESCUE OUR FALLEN SISTERS IN CHRIST. VISITORS PERMITTED BETWEEN THE HOURS OF 2 AND 4, EXCEPT ON THE SABBATH. NO GENTLEMAN VISITORS AT ANY TIME.