In Old London, where paranormal races co-exist with ordinary humans, criminal verdicts delivered by the all-seeing Heralds of Justice are faultless. After a man is declared guilty of murder and sentenced to death, his daughter turns to private investigator Yannia Wilde to do the impossible and prove the Heralds wrong.

Back in London, Tim Wedgebury is surprised when police appear on his doorstep with a story about how he was stabbed in the West End. His body disappeared before the paramedics’ eyes. Given that Tim is alive and well, the police chalk the first death up to a prank. But when Tim “dies” a second time, DI Jamie Manning calls Yannia. To assist with the case, she must return to the life she built in Old London—but as Yannia considers where her loyalties lie, will this trip to the city be her last?

On the night of Samhain, the veil between worlds is at its thinnest, and ancient magic runs wild in Old London. When Lady Bergamon is attacked in her Ivy Street garden, Yannia Wilde is asked to investigate. Who has enough power to harm Lady Bergamon in her own domain? While Yannia searches for the answer, nature herself appears to be killing beings in Old London. Yannia and her sidekick Karrion join forces with New Scotland Yard to solve the baffling deaths. But wherever they turn, all the clues point back towards Ivy Street.

The oldest and gravest of the Wild Folk laws dictates that human flesh must not be consumed. But when half-eaten bodies start turning up between Old London and the North, Yannia Wilde knows the killer can only be one of her kind. When Yannia’s betrothed, Dearon, insists on joining forces with her and her companion, Karrion, things get even more complicated. While Yannia tries to track down the killer, another case in Old London draws her attention.