London, 1887. At the progressive sorority The Curious Club, young adventurer Veronica Speedwell meets the mysterious Lady Sandridge. A high-born lady asks Veronica for an impossible favor - to save the famous philanthropist Miles Ramsforth, who was sentenced to hang for the bloody murder of his beloved, the artist Artemisia. Veronica has only a week to find the real killer, after which Ramsfort will be executed. Plunging into the secrets of aristocrats and London bohemians, Veronica and her partner Stoker quickly realize that they have found themselves in a truly dangerous enterprise...