Tess Stimson - Az enyém or a tiéd sem

Louise has been left by her husband Andrew for another woman and now has to watch him start a new family. That certain other woman is now his wife - but Louise won't let new wife Caz usurp the man and life that was once hers.
As the vengeful Louise digs deeper into Caz's past, the forced polite relationship between the two women sours. However, in the midst of their desperate struggle, more and more things are revealed about the man they both married. And when Andrew is murdered at a family gathering, both the new wife and the old wife stand over the body.
They say the wife is always to blame. But which?