For most of its short running time, Open Windows is riveting. It involves a nebbishy guy who runs a website creepily devoted to an actress who finds himself pulled, step by step, into and insane and disastrous crime.
The movie begins on Nick's (Elijah Wood) laptop. He is messaged then given intrusive software that allows him to spy on the actress. As the movie progresses he gets in deeper and deeper; he is complicit for taking that first step but then is simply caught.
The film is cleverly shot entirely through screens open on the laptop. I'm not sure how this would work in the movie theater but it works great on TV.
The movie was written and directed by Nacho Vigalondo, who specializes in elaborate twists, but after digging himself in deep in the first hour he can't find an elegant way to dig himself out again, and the last part of the movie is a long, convoluted mess that is like he was trying to get every twist ending he could think of in one movie.
I loved most of this movie, and would have rated it a 9 if it had all been as good as that first 70 minutes, but the last part is maybe a 5 or 6.
A final note: this would make a great video game. There's a fairly obscure adventure video game called The Experiment that involves doing everything through security cameras, and I would love to see something similar done with this.
Anyway, if you're a fan of Nacho, check it out. For all its issues it's pretty entertaining overall.