Synopsis for anyone who's interested. Obviously spoilers for the episode, but if you dont want spoilers what the hell are you doing in this thread?
Queen Wraith (Have we got a name for her???) is about to interrogate Sheppard when the arrival of another Hive Ship interrupts her. Sheppard is taken back to the cell where they all manage to escape (Ronan would never be able to make it through an Airport metal detector without being detected...

).
Back on the planet McKay is freaking out because he knows his team is in trouble, however Ford's cronies wont let him dial back to Atlantis for a rescue team. So he injects himself with a whole vial of the enzyme thus transforming him into Super!McKay where he then unleashes the power of a 'Brilliant Scientist backed into a corner'. Trademark. Two guards now incapacited and McKay get back to Atlantis. However the enzyme has messed him up and Weir is unable to get anything meaningful out of him. After rambling on (think normal McKay panicky rambling then x100) he passes out. Some great acting by DH there
Meanwhile, back on the Hive ship, Shep and teh gang run into some humans being cocooned. After a plea from one of them, they try to rescue them (which Ford is opposed to) but the Wraith arrive and overpower them. Teyla, Ronan and Kanayo awake in one cell and Shep, Ford and one of the girls they tried to rescue are in another cell. Now Kanayo and Ford are in some pretty deep strife as their enzyme is wearing off. Teyla and Ronan aren't feeling 100% either. Kanayo soon bites the dust and Ford is not far behind when the Wraith show up and take Kanayo's body and Ford away. The Girl tells Shep of her simple life and how the Wraith fed upon her mother and brother in front of her. Shep then attempts to comfort the girl by telling her he's not afraid of the Wraith (though apparently Shep has some clown issues...). The girl attempts to get Shep to tell her more about the world he comes from, but Shep is relucant to do so.
Back at Atlantis, McKay is having some serious withdrawal issues. Beckett is doing his best to help him, but without more of the enzyme to ween him off slowly they have to go cold turkey and hope for the best. McKay manages to pull through (no doubt due to his stubborness) and informs Weir of their predicament. He also had the co-ordinates to the planet that the Hive Ship was on teh way to cull, so McKay and Major Lorne board the Daedalus to intercept and attempt to stop the Wraith from culling the planet (and rescue Shep and the gang of course!).
On the Hive Ship, Shep is taken to the Wraith Queen again. However he's realised that the girl was actually a plant to try and draw information out of him and says as much. Turns out the Wraith have human worshippers who live at the beck and call of the Queen in exchange for their lives. Shep bluffs the Queen by saying he too has made deals with the Wraith (how else would he get his hands on a Dart and have all the info he needs to blow a hive ship etc) and that the Wraith he bargained with is actually the queen aboard the other hive ship and that the other queen was going to double cross her. This Queen doesn't seem to thrilled at that, and is about to feed on Shep, when Ford rocks up and takes out the Queen and her guards (with Ronan's gun none the less. I want his gun...). Shep and Ford then go to rescue Ronan and Teyla, but Ford stays behind to 'watch Shep's back'. That's the last we see of Ford on screen. Shep free's Ronan and Teyla, they head to the Dart hangers where Shep steals a Dart and picks up Ronan and Teyla in the beam.
So McKay and Lorne are on the Deddy with a Puddle Jumper which they are gonna take out (cloaked) and attempt to establish radio contact with Shep while Caldwell keeps the Deddy hidden behind the planet. No luck on contacting Shep, so Caldwell orders the Deddy out and attempts the 'Beam the Nuke aboard the Hive Ship' trick. Of course, Wraith are too smart for that now, so the Deddy is engaged with two Hive Ships with the odds way in favour of the Wraith. Back aboard the Deddy, McKay notices a lone Dart making a strafing run on one of the Hive Ships. It is of course Shep, in an attempt to get the Wraith fighting each other. The Wraith fall for it, and start shooting each other up and in the process manage to blow each other up. Stupid Wraith

Anyway, nothing survives, and McKay, Caldwell et al assume that Shep didn't make it.
Weir back at Atlantis gets the bad news and is about to Angst when the Gate dials up. Shep, Teyla and Ronan swagger through having survived another day

Once Shep saw the Wraith engaging each other, he hauled arse for the gate and dialed the nearest planet with a gate on it, landed and beamed Teyla and Ronan out of the Dart, then dialed home. McKay gets back and his relieved to see his teammates alive and well. And all is well
So what'd we get out of the episode?
* Wraith have human followers who worship them in exchange for their lives.
* Wraith are definitely terratorial. That was why they turned on each other so quickly
* Ford's fate is unknown. He was last seen on the hive ship before it was destroyed, but we never saw him die. It's entirely possible he managed to make it off somehow.
* Shep has clown issues.... o.O
* Ronan carries alot of knives on him.... O.o