Bargain! I would be very happy with that!

It's definitely a game you can play with your partner, me and the girlfriend played it Friday night, Saturday night and last night and have great fun solving the clues together and peicing together the story / guessing what's going to happen. It's also good to have another set of eyes / ears in case you miss something which I have done a couple of times!
I'm on disk 3 now, not bored of it at all and there are a hell of a lot of cutscenes but in my opinion all very well done and a very gripping story.
I think it's quite important to have patience with it as well in some places, it's really worth finding every clue on scene to ensure you don't miss anything and have the evidence required to accuse someone!