Okay this was fantastic. On my first watch I didn't really appreciate it enough. Not really in the mood for a big review so I'll just say that I loved how it puts into the screen the phrase "An eye for an eye leaves the whole world blind".

I was hooked seeing how everything the Doctor was doing to broker peace between the two species was let down by those that are "so much less than the best of humanity."

Plus, this acts as a sort of sequel to the first Silurians serial with the Third Doctor, which I really liked.