Good start, but then it gets ruined

If the ambition is to provide two hours of instantly forgettable, popcorn-munching escapism, it succeeds.

A film with more than the usual spoiler issues. Talking about it in any detail feels akin to handing you a gift-wrapped present and saying, "I hope you like it -- It's a thriller about a diabolical secret experiment."

The film's masterful storytelling did its job. The message was clear. No need to overdo.