Did you know that getting stranded on a deserted island has a way of shaking up social hierarchies?

I suppose that was a big part of the plot for recent Best Picture Oscar nominee “Triangle of Sadness.” As well as the literary classic “Lord of the Flies.” And, it’s represented on television in everything from “Survivor” to “Lost” to “Gilligan’s Island.” It was at the center of a play I did in high school called “The Admirable Crichton,” where I played a rich snob who gets taken down several pegs.

Director Sam Raimi is hoping you’ve somehow avoided all of these precursors, plus others I’m sure I’m forgetting, because only then can you find originality in “Send Help.”

Rachel McAdams stars as Linda Liddle, a doormat of an employee in the strategy and planning department of a financial consulting firm. She does great work, but she doesn’t have the best social skills, and her bro-y male colleagues take her work for granted while........

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