Showtime Presents: Dexter iPhone ScrambleThe challenge: Unscramble the Dexter poster in as few moves as possible. To move a piece, tap on it. Only pieces next to an open space can be moved. Once you've completed a puzzle, shake your iPhone to re-scramble and see if you can beat your best score.Don't miss the Season 3 premiere of Dexter, September 28, at 9PM ET/PT, only on Showtime. For everything Dexter, go to SHO.com now.