Foul Lady Fortune" is a historical fantasy duology set in 1930s Shanghai, following two spies, Rosalind Lang and Orion Hong, who must pose as a married couple to investigate a series of brutal murders amidst a backdrop of civil war and foreign expansion. The story explores themes of espionage, political intrigue, and the complexities of love and redemption, all while hinting at a larger conspiracy. The series is a spin-off of Chloe Gong's These Violent Delights series.ac