!! Spoilers for series six, episode four of Slow Horses. Nothing beyond this episode. Only read on if you've seen it!

This episode opened with the most intense ten minutes of fighting in a bowling alley, neon lights and everything. It was almost a relief when the opening credits rolled. But it wasn't all action in this fourth episode of the series, as we're finally starting to get some answers.

What seemed like two separate threads are now definitely one and the same, and it all hinges on Taverner. Twisted media mogul Damien Cantor is reporting to someone as yet unknown and putting pressure on the MI5 boss, at the same time as we learn about the Kazan retaliation she ordered that is now threatening our Slow Horses. The crux of the matter is that, cowardly and power-hungry as she is, Taverner has cut our Sid loose. The enemy want Sid's head, and Taverner is, so far, doing nothing to stop them.

Meanwhile, Damien is using Harkness to tidy up all his loose ends, which is why Reece Nesmith is in trouble. Lamb, Ho and Reece turned up on Flyte's doorstep this week, and her reluctance to help was adorable but it was the right thing to do. Last week, I was convinced she was going to go rogue after being fired by Taverner, but she's at least falling in with the right crowd. The fact that she was the one who could slip into the restaurant and do a bit of spying herself was a lovely long-distance way of sticking her finger up at the MI5 chief.

They met up with Harkness at a Shake Shack (I've never been, are they any good?) where Lamb learned that he's not the one killing off our Slow Horses. Harkness saying in his laconic voice: "Did they get anyone I know?" was telling. Does he, just maybe, care for River a little bit?

The other four Horses, Standish, Shirley (still safe), Louisa and Moira, were on a road trip to the safe house, bickering non-stop until they arrived at the poshest house you've ever seen. It was a great image, these scruffy individuals walking around an ultra-modern house and realising it's Taverner's holiday place. I, personally, wouldn't feel safe in a house without curtains, no matter how expensive or remote it was.

And that just leaves Coe. He was left in danger at the end of the last episode, alone in the car with the Russian hit squad coming after him. He escaped that moment and managed to square up to the male half of the team in the men's toilets. I thought he stood a chance as he's not afraid to use that terrifying knife. But the fight was vicious. I prayed we might get away with them taking each other out, at least. Sadly not.

It was a grim, if not unexpected, way to end the episode. River's moment of tenderness on finding Coe's body, looking down, taking it in. These people drive him crazy, he spends 90% of his time curbing his frustration, but deep down, he cares. And so do we. Two episodes left and I'm desperately hoping no one else is going to fall in the line of duty.