It could have been so much better but sinked in the sea of plot holes

Rating: 7/10 (29 February 2020)

A very well crafted film, but contains a plot hole so big that ruins the whole film. Earlier when talking to Harlan, marta tells him that because of the morphine, he will die in 10 minutes. But later, at 8 am Ransom gives same dose to fran and when at 10 am, after 2 hours, marta arrives, fran is still alive. She confesses the truth to save her. Now this much big mistake is not good for a murder mystery.