Nige Morton is Neil Morrissey's best ever role imho. He was an unlikeable character, played brilliantly.
Right, here's my twopenneth:
Kate is not undercover in Operation Lighthouse, but she has misguided loyalty to Davidson because they all know she's ex AC12. She'll have known they'd be back in due course.
Farida was completely set up by Davidson to carry the can - that's why Davidson cried when she got home to Fortress Anti-OCG. She lied and ended the relationship to deflect suspicion from herself.
Davidson is in the pay of the OCG and I think they told her she needed to get Ryan on the MIT. Whether they told her to replace Farida with him, I don't know. Farida is clean as a whistle but knows too much. Probably a good thing she's been arrested as she's likely to be an OCG murder target.
Ryan and Jo each know the other is involved with the OCG which is why he was her driver after she was released. Jo cried when she was given another burner phone because she thought that once the Vella case was out of the way, without the actual culprit being found, then she would be free. We know that's never the case in LoD. Her career, relationship and life are all destroyed.
The rest of the series is going to be AC12 and Kate figuring out what's been going on. I suspect we're going to have a race to catch Ryan with someone being in mortal danger at his hands as the denouement of the series. We'll find out who H is shortly before this, but that won't be the crux of the story by then.
Plausible, but with Jed Mercurio I could well be wrong!