Emily Hammond is killed in her flat by a fetishist who makes up and wigs her corpse,the slaying recalling the murders thirty years earlier by a serial killer the Shoreditch Creeper,who had connections with Emily’s house. At the same time Ripley is introduced by embittered Erin Gray to creepy,’unretired’ superintendent Stark,anxious to nail Luther for killing people who eluded justice and taking the law into his own hands. Stark and Gray put a wire on Ripley as he and Luther investigate the apparently ritual murder of obscene Internet troll Jared Cass.