This was a terrific story, for which I gave 8s and 9s for the first 5 episodes. But the last one was so full of holes it spoilt the whole ending.
- How did Madeline and Jess get into an RAF base in a private car with no authority?
- How did the plane get around the airspace to change runways so quickly that the MI6 team couldn't get to the new runway in time?
- How did the steps get to the plane and the doors opened so quickly?
- How did they, Nolan and Li get off the base without challenge?
- How did they all drive into London, and the US embassy without being spotted by thousands of traffic cameras and the security of the embassy?
- How believable was it that Mike, with his senior role at the US embassy, not realise that he was in the grounds of the Chinese embassy?
In addition, the last 10 minutes was a complete anti-climax.
Sorry, too many blunders for me: I have given it a "5".