The Doctor and Nasreen have found the Silurain city where Amy and others are being held, deep underground. Meanwhile, above ground, Rory and others keep a watch on Alaya.
Rory! Oh Rory!
At time of writing, this is on iPlayer for the next 7 months if you’re in the UK.
For the best viewing experience this story is also available to buy. You can get it on DVD. It’s also on Amazon Prime for £2.49 – other retailers are also available (except the BBC, which has sadly closed its online store). It may also be on your Netflix, Hulu, or whatever else you subscribe to.