I have a theory, pure speculation of course. But interesting non the less I think.
Some say the John who arranged the GB4’s final dates convinced them to ditch their cellphones. This would mean that John knew in advance he was going to kill them, and shows the killer and the John are one and the same.
I’m not quite convinced that happened. Maureen, Melissa and Shannan all had cells with them. Amber Costello didn’t have her own mobile, only a shared one, so it’s plausible she might not take it with her. That leaves Melissa and I can’t find confirmation what happened to her phone.
There’s a lot of questions and things that don’t make sense. Like Shannan leaving and there just happened to be a serial killer who chanced across her or her coincidentally going missing near the GB4.
I listened to the Lisk podcasts Q&A with producer Shannan today. Even though the male producer thought Lisk might a group, both of them felt pretty certain Brewer isn’t involved.
So I mulled it over. Then it occurred to me, if you were a serial killer of escorts, your main concern is going to be making sure there is as little info as possible linking you to those victims.
So, if a serial killer had noticed, for example, that a middle aged male neighbour was regularly entertaining prostitutes, that would be ideal. So the SK could’ve sat on his porch, watching who came and went, if they had drivers, if they were wasted etc, etc And Brewer would never have a clue his escort visitors were being watched and sometimes taken.
And there would be no forensic evidence of the SK having earlier interactions with her as they hadn’t happened.
So maybe Shannan is more like the others in that there the plan was always to try and take her when she left, but the complications created by her having a psychotic break meaning her abduction was noisier and more witnessed than the others.
Just speculation, as I said.