Worst of the 4 series in my opinion. Too over the top, poor time keeping and you could see most of the "surprises" coming from a mile off. It was blatant Jack hadn't died, as there was no real dramatic music or anything. Still thought the plan they had could have backfired and he could've actually snuffed it. The speed in which they managed to crack Mandy annoyed me. It took them fucking ages to crack that cunt from the boat earlier in the series, yet a supervillain from 3 of the 4 series tells them everything within 10 minutes of getting caught.
Also, too many people going missing without much explanation. The boy Behrus especially, Marwan specifically wanted him for something, yet the last we saw of him was getting a chip removed from his head then nothing else.
Still a good watch like, but just nowhere near as gripping as the other 3. I was laughing throughout most of the deaths FFS. The only emotional bit was Jack saying goodbye to Tony and Michelle at the end.
I can't believe they're doing a 5th series. Just leave it where it is.