Miles will die in Series Three causing Chandler to temporarily lose his grip.Because Series Three needs to achieve maximum bleakness.
Chandler will get a girlfriend in Series Three and then she'll die.Again, to make things as bleak as possible.
Anderson is Chandler's real father.Fairly obviously.
Kent has been in love with Chandler since Series One.A bit obvious, all things considered, but it needed to be said.
Everything after Series Two is set in a dystopic Alternate UniverseThink about it, Series One had media attention all of over, it was even a major PlotPoint. By Series Two the media is less involved but still there, but by Series 3 there are a series of massacres with zero media attention. And how no-one ever confronts the team about all of their murderers dying So, my terrible theory is that either after Series One or Series Two the Whitechapel universe spilt from our own, becoming darker and more brutal, maybe more militant, where mass murders are more common, their are new gass lights in London and the deaths of murderers are seen as justice
Miles will die in series fourSince he managed to survive series 3
Kent will come out in series 4
Mansel will die in series fourHe's the least stable of the main characters, and the creepy phone calls are the least justifiable He came close, but Jossed all the same