Plot: A tourist (Alexander Skarsgard) visiting an unstable, totalitarian country accidentally kills someone in an auto accident. He’s sentenced to death but discovers that he can have a clone made to take his place for the right price. Soon, he falls in with a maniacal group of affluent tourists who’ve taken advantage of this fact to engage in wild acts of hedonism and violence.

Review: To say Infinity Pool is not for the faint of heart is an understatement. One could have said the same thing about director Brandon Cronenberg’s last movie, Possessor, but the extreme violence and sex on display here go beyond anything shown in that film. Those who catch it in theaters when it opens this week may not understand why the film is so controversial, but that’s because those audiences will be seeing a censored, R-rated cut. The version we got at Sundance,...