Because he withheld evidence from his fellow detectives, Philo is accused of being the man behind the string of murders and is thrown in jail. There, he finds some unexpected help from Vignette. Elsewhere, Ezra takes exception to Imogen’s relationship with Agreus. Sophie offers Jonah a deal.

As tensions rise on Carnival Row, Philo must confront both darkness incarnate and the evil that controls it. Vignette gleans the true nature of The Burgue. Imogen lets her feelings for Agreus go unbridled. Breakspear's secrets catch up to him.