I just finished watching Taken and I must say that it was a really good series.
One thing that made Taken difference from the other series's is that it spanned over 50 years. We saw three families, the Clarke's, the Keys' and the Crawford's and what they went through during those 50 years.
The Clarke's and the Keys' went through series of experiments by the aliens which ended with Allie the daughter of Charlie Keys and Lisa Clarke, the most powerful being on earth. Meanwhile the Crawford's always tried to find out more about the Keys' and Clarke's and the no remorse Mary was very near, but at the end even she realised that they couldn't do anything.
At the end the Aliens took Allie with them, but Allie left a message to her mom which said that she will be back.