4J

What did you think about Robert’s theory that the killer was a collector? How would the killer know this information about people’s bodies and conditions?

The killer was a collector of human rarities. He also collected pictures of them which showed their human rarities.

It seemed obvious he was a collector. I don’t think he’d be taking all these body parts just to throw them away.
As for knowing all these things about his victims, perhaps he has a list of all the perfect (or rare) body parts he wants to collect and has set about researching ‘donors’ from whom he can harvest them. Internet searches would have brought up Linda Parker, the model, for instance. But I think the 84yo with the perfect eyesight, and Timothy with his very rare blood might have required other means to unearth, unless I’m mistaken. And as for his first victim (red hair/blue eyes), perhaps observation or happenstance (as with finding a poster with his next victim on it) is the answer?

I didn’t see him as a ‘collector’ but did see him taking trophies, e.g. feet and hands, eyes, skin etc but what Hunter said made perfect sense once you had the extra information and it fitted perfectly with the messages left. How he joined up this thinking I do not know.
Some were more obvious than others but feel he must work in the medical profession some way or be a good hacker.

I saw the items he took as trophies, not as the main purpose of the killing. Sergei’s observations are spot on. I am curious to learn how found Timothy and the 84 year old. Having something to do with the medical profession seems the most likely way.