The cult disapproves of doctors and pairing committees as they believe they interfere with god's chosen path for humans. Luke suspects the unhinged Ethan Roach, leader of the Visionaries, who uses snakes for Luke's scary initiation ceremony into the cult. Luke's other suspects include Dr Coppard who is Anna's partner (she had been having an affair) and Alex Foxton, Anna's boss, was against her illicit work with conjoined twins. Then another doctor and a pairing committee are murdered. Luke feels he has many leads but is getting nowhere. Out of the blue Luke and Malc suffer a violent attack in a lift shaft. Malc is obliterated but with painstaking work is rebuilt. He just managed to catch a picture of the killer - Reece Morgan, receptionist at Luke's hotel and covert Visionaries member. He had attended services in disguise so Luke never recognised him. Despite Luke and Malc thinking they were getting nowhere it was their actual extreme proximity that made Morgan attack Luke and Malc and thus reveal himself. The case is solved.