whats the movie where the girl thinks her step mom is a murderer but in reality, she is the murderer

she and her "sister" go around trying to prove that she killed her real mom but in the end its all in her head and turns out that the main girl had killed both her sister and her real mom in a fire years earlier. it was released in either '08 or '09

sort by best latest

DStettler profile image60

DStettler says

6 years ago
 |  Comment
Nickalooch profile image85

Nickalooch says

5 years ago
 |  Comment
MystMoonstruck profile image82

Cyn (MystMoonstruck) says

5 years ago
 |  Comment