Two journalists, with a history of mildly antagonistic competitiveness, do research to complete their books on The Alperton Angels case. The notorious case dates back to the early 2000s when a shocking multiple homicide case captured the attention of the nation: a cult obsessed with angels and the end of days is uncovered when most of its members are found murdered and mutilated. Meanwhile, a young female member of the cult shows up at a hospital carrying a newborn baby in a plastic bag. The two journalists struggle to piece together events and find the real story while mysterious forces work against them.

This is the third book written in Hallett's signature style - presented as a file composed of transcribed interviews, research notes, WhatsApp conversations, and so on. True to form, it is full of twists and hidden agendas, with a little breadcrumb trail scattered through the narrative if the reader pays attention. I found this one more enjoyable than her last (The Twyford Code) and certainly much easier to follow. However I think this style has a limited shelf life and three novels might be the limit.