Mi querido asesino

Would you really do anything for the one you love? She's beautiful, your wife and you've just found out that she's been having an affair while you've been away. You've come up with an idea of the "perfect murder". It's going to plan... or is it? This is a really clever plot, you the murderer are getting a two for one deal because you've just found out your wife has been two timing her lover. The police will never suspect you or if they do what are the chances of proving that you did it. There is a great sub-plot which I never saw coming; my evil mind was not focused.