Who can help in finding a movie's name I'm looking for

Maybe someone can help me to find the movie I’m desperately looking for. It’s about a wife killing the maid while she is on medication. All recorded on surveillance cameras. She cleans the crime scene afterwards and goes to bed. Her husband is then suspected because he administered the medication to her and knew that the side effects would cause memory loss wherer she cleans everything after the murder. Then she kills her lover/ detective who was involved and makes it clear that she faked everything. Thinking she get away with all of it, she confesses everything to the detective, unaware that he will record her confession and be arrested in the end

suitcase killer: the melanie mcguire story maybe?