• Simply put, this is a thriller where you sense while watching it the cast and director had a blast making the film, the actors loved playing their roles, and you get to share in that upbeat energy while viewing it. (I hope for a behind the scenes "making of" short as a bonus feature when the film is released for home purchase, based on one story Moretz recently told on a talk show about Huppert's ongoing devilishly playful behavior on set.) More good news: I will report (without spoiling anything) there were two major moments where the film surprised me with unexpected plot twists--and I'm a guy who figured out the supposed famously hidden twist in "Sixth Sense" in the first few minutes. I enjoyed every moment of "Greta" for multiple reasons, but the committed performances were what elevated it to pure joy.