It's Now or Never: Max and Alice

Max and Alice are twins, well actually they are more than that. They do everything together, have the same friends, are in all the same classes, but then Alice changes. She starts going off the rails and then disappears, their mum claims not to know anything about it.
When she returns mysteriously late one night, she doesn't say a word. Somethings happened, Max can feel it, but will he ever get to the bottom of it; its now or never.