Ghost Trick: Phantom Detective Cheats for iPhone/iPad
Also on: Nintendo DS
This bonus feature becomes unlocked when you clear version 1.01.00 of the full game once.
If you get stuck and need a clue just let the murder play out again (there's no penalty for letting your victim die twice) and look for hints about which objects to interact with.
Also on: Nintendo DS, check out those pages for more help with this game.