And in the end, the criminal won't be marked for you - you will have to choose from the list of suspects. And if you are wrong, the game won't say it directly, because every suspect has motive and means, and there will be a chance to accuse everyone of them. And if you choose the wrong suspect, you won't get the correct answer, so you'll have to start again.
First I thought: So basically, you can never be sure you got it right? It just ends and you never really know! This is a very realistic game O.O
Then I realized it wasn't a randomly generated scenario. So it's not that harsh.
Anyway. What platform are you targeting?