So, did everyone spot the laptop in Hasting's hotel room? Had the same chat window that the big boss was talking to John through?
And obviously now we have the insinuation that Cafferty has identified Hastings.
I think it's gonna be more complex and Hastings is gonna end up in hot water for running his own undercover thing without telling anyone where he's posed as the corrupt boss etc to get intel or he's purposely being framed by whoever it really is.
I don't think it can work as him being H all this time, because it doesn't explain his behaviour. There's been so many opportunities for him to close off the investigation into H and so many other avenues that his persistence in doing so doesn't make sense if he is the man behind the curtain.
Maybe, he's being bribed/blackmailed so he's trying to nudge Kate and Steve in the right direction and his actions are making him look like the guilty party.
There's always so much detail to take in from this show.