I know about poisoners. This movie accurately portrayed the charming personality of the husband, who deep down inside is seething with rage against his wife. This happens far more than anyone suspects. Death by poison accounts for 60% of all deaths. While this sounds absurd, it is statistically true. I thought the movie was very well done, very accurate about how far a serial killer will go, and showed the pattern of behavior over years. I give it full stars for accuracy. It makes one wonder how many people have truly died from poison. I read in the "Poisoners Handbook' over 50% of the graveyard would sit up if you asked if they'd been poisoned. It sure is an easy method to rid one's self of a problem. A few lies here and there, and it would be easy to make someone appear ill and incapable to unsuspecting onlookers. Beware is all I can say... they don't exactly announce it. :)