Leelee Sobieski plays Ruby Baker, a kid going through the terrible teens. When she and her brother's parents die in a car accident, they move in with ultra-modern family friends, Terry and Erin Glass. You know right from the start that there is something dreadfully suspicious and exceedingly bizarre about the Glass couple, but you can never be too sure exactly what at first.
But, Ruby Baker is a smart kid who's ever-present skepticism about the intentions of her new surrogate parents, and starts trying to figure out what's wrong.
On the one hand, you're never sure whether you can always trust Ruby because even she, too, arrogant most of the time, seems like trouble. It's hard to sympathize for a character like that at first. And, not only does Stellan Skarsgård make an appropriate villain as Terry Glass, his wife (played by Diane Lane) is not entirely an innocent creature herself as most women are often written to be in the role of the creep's wife/girlfriend/mother, etc.
A good mix of characters and a creepy setting, combined with a decent finale, make it just the perfect mix of suspenseful elements. And one that I would recommend seeing.