Fairly straightfoward and predictable, but nonetheless Huppert brings a chilling performance as the unhinged title character that may make you wary of helping strangers out from now on.
The big reveal is spoiled in the trailers, and it come pretty early on. It would've been better had it been delayed a little, after the 2 characters had spent more time together and a few scenes of Greta acting crazy at times to have Frances grow some suspicion.
But the main problem is how illogical/stupid the other characters are, beginning with Frances either unable or unwilling to block Greta's number despite the obvious problems, and upping the ante with the ending.
All the ridiculousness is summed up one face-palm worthy quote:
"What do we tell the police?"
Gee, what actually happened might be a good idea.
