Question: Disappearance of Renee MacRae, Britain's longest running missing persons case, is as notorious as the murder cases of this serial killer involved with how many people? 
Sentence (from "Bible John"): Bible John is the nickname of a serial killer who is believed to have murdered three young women after meeting them at the Barrowland Ballroom in Glasgow, Scotland, between 1968 and 1969.
Relevant evidence: Yes