'Evil' was the last Dalek story of the 60's, and in my opinion, is a great story to end this era for Dr Who.
Plot: The Daleks, having stolen the Tardis and had the Doctor and Jamie brought back in time to Victorian England, want the Doctor to conduct a experiment to find the 'Human factor', so that they can impant it in themselves and thus defeat the human race. The Doctor, threatened with the destruction of the Tardis if he dosn't agree, reluctently carries out the Experiment, which involves Jamie rescuing the daughter of a victorian scientist forced to work with the Daleks, and having Jamie's instincs and emotions he has during the rescue being recorded and impanted into test daleks. The results of the experiments are surising, but a journey to Skaro revels the Emperor Dalek's true intentions...
Pros: This story see's a number of first's in Dr Who. It's the first time the Emperor Dalek is seen, and is also the first time that the line between daleks and humans is blurred, if you get what I mean. The overall plot is a very good one, the characters are great, and daleks are also brilliant.
Cons: The time travel machien the victorian scientists invent, a device which uses static electricity to propell a reflected mirror image through time, is very unlikely to work in the real world. Also, I think personally that at 7 episodes, it's a bit long. It could, I think, be compressed into 5.
Apart from this, it's another great Dr Who story, and olnly the above stops me from making it 5 out of 5.