For the Stalker thing (my thoughts)
Let's take a look on the male characters we have actually in the Game:
Steve, Harry Wolff, the Actor, Detective Carter, Johno, Zak and David.
Like others mentioned (
Paldor for example), it should be someone wich doesn't know who the MC is.
So Steve, the Actor and Carter are off from the list.
Wolff and David are a little bit to chubby for the figure we can see two or three times (Endscreen for example), so both are also out.
So now only Zak and Johno are still on the list.
Zak is (for me) also not on the list, bc one talk to Emma and she would propably do whatever he wants, so no need to stalk her.
And i think, Johno (as obvious as it is) is the most possible solution to be the Stalker, bc from his Job he should be skilled enough to hide somewhere without being caught and he has the equipment to take some "nice shots".
I have to admit, this doesn't fit exactly what i am thinking, that there is way more going on in the future and that all of the bad guys are somehow work together. (some will know what i am talking about)
Or you could say, Johno is already blackmailing Suzie, so why also this interest on Emma?
Right, but "what if"...
The blackmail doesn't stop, infact a Papparazi like him, has for sure some stuff, not only to make some dirty pictures, he can also make a video named "Ex bisexual CoGirl in her first hard Anal pounding and she took it like a Champ"....
And with the new stuff to blackmail her even more, he has this thoughts, that Suzie is that desperate, to arrange something, like Johno being alone with Emma....
(Ok, she would for sure bite his head off....)