The Stranger in Our Bed

I've seen Before I Go To Sleep so many times and I just realized that the plot is quite familiar despite having a slightly different setting, backgrounds and motives (the aforementioned film is based on the novel as well). An unhappy married couple, a woman wants to get away with it and uninspiring way to end her misery. That's basically Before I Go To Sleep with wealthy backgrounds, mother in-law intervention and witnessing a crime scene. No big names who starred in this film bar the mother in-law who was Miss Moneypenny in Brosnan-era Bond film. Finding out that the leads are actually married in real life while being abusive and manipulative in this film feels so surreal.