Well I actually finished and 100%'ed Murdered Soul Suspect over the weekend lol.. The xbox said I had been playing for 14 hours on it.. but I suspect quite a few of those hours I was actually idle.
So I can see why the game didn't get very high marks, its quite a short game, there's little re-playability, despite a small sandbox hub area, the game funnels you down a linear path, your ghostly powers are very limited, it is a very easy game with no difficulty levels and there is occasional screen lag.
However, for £6.50, I thought I definitely got my moneys worth, because the story is excellent with roots in the real world, the graphics are not bad.. and your a ghost detective!! I'd love to see a 2nd game that addresses the main issues, but also ups the violence, horror and gore.. so basically a bit like Condemned.. but with a much better story. There weren't any real scary bits in M:SS, but there was a point I was concentrating and my phone went off and made me shit my pants lol.