I bought this as a gift for my 29 year old daughter and am sure she will love it too.
I have only watched Series 2 on television but enjoyed it so much I bought her the Series 1 and 2, and will watch Series 1 when she has finished.
I don't watch soaps and apart from Lost, House and Law and Order I rarely follow TV series.
Mistresses (I can only speak for Series 2) was totally absorbing. I liked the four women enormously and cared what happened to them. All the characters were believable and were brilliantly cast. As one episode ended I was impatient for the next.
Don't let the title put you off - as it nearly did me!