James Patterson's novels are slick and superficial but engrossing -- and this Nintendo DS spin-off is rather similar.

The gameplay of this whodunnit - mixing CSI-style sleuthing with mini-games -- is smooth and simplistic but strangely addictive.

If it wasn't for the dead bodies at each crime scene you could happily give it to your primary-age daughter.

You play San Francisco cop Lindsey Boxer, trading wisecracks with the chief while seeking clues with the stylus.

The story gets deeper as it goes along, and the mix of activities more satisfying, but the game is too short and shallow to offer a real challenge and its puzzles pale alongside the Professor Layton games.

David Knights