We see Ransom stabbing Marta in the chest, but there was some weird noise, and apparently the kill didn’t work. What did happen? Did the knife retract? I have no clue.

  • 2
    They demonstrate the retractable feature of the knife immediately after the initial attempt. -1. youtu.be/fLkBDy8ZMy0?t=164
    – Charles
    Commented Mar 2, 2020 at 12:15
  • 1
    In the movie, it is shown pretty clearly that it is retractable.
    – Sujit
    Commented Mar 2, 2020 at 12:22

2 Answers 2


Yes, it's a fake knife.

Such knives have a retractable blade, which apparently is not sharp. It is generally harmless and used in party tricks.

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If you recall from earlier in the film, Harlan criticizes Ransom's protected lifestyle saying he is unable to tell the difference between a stage prop and a real knife. That was a bit of foreshadowing, as Ransom grabs a knife to kill Marta, only to find out she hasn't died. That's because, as Harlan foreshadowed, Ransom didn't know the difference.

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