I did a marathon with A Perfect Murder
I also did the marathon with What Lies Beneath, Fracture, and Gone Girl titled When A Marriage Becomes Creepy. You guys can check out the link on my blog.
http://mbmb14.blogspot.com/2016/01/when-marriage-becomes-creepy.html
While this movie may not be as good as Alfred Hitchcock's Dial M For Murder, it's still a highly entertaining movie that shows how creepy marriages can be when one secretly wants to murder the other. Michael Douglas, Gwyneth Paltrow, and Viggo Mortensen give stellar performances along with the fast pacing and suspense.