The Strange Case of the Alchemist's Daughter by Theodora Goss is a captivating gaslamp fantasy novel that reimagines classic literary characters. The story revolves around Mary Jekyll, who discovers she has a half-sister, Diana Hyde, and together they join forces with other daughters of famous literary mad scientists to solve a series of gruesome murders. This book combines elements of mystery, adventure, and supernatural elements, making it a delightful read for gaslamp fantasy enthusiasts.