It appears that Cara Delevingne (Margo) will become a big star. That look and that voice is very unique. She doesn't have too much screen time in this movie but she makes an impact.
Cara's character is the girl next door and she disappears. Her neighbour finds clues that suggest where she has escaped to and with others goes on a mission to find her.
"The supporting cast really shines here, each of them very different teenage characters that combine well as friends much like in real life"Nat Wolf does well as the protagonist trying to find Margo. I've enjoyed his performances in other movies too.
A simple story with a good ending. Enjoy.