Excellent concept, could use some refining
First of all, I didn't expect to be hooked by this game as fast as I was - I'm not a big fan of point-and-click adventures, but your unique, dark art style and "telling the story backwards" concept kept me playing to the end. The concept really ties in to the point-and-click genre as a whole, and I'd like to see this kind of storytelling explored in further detail in other games, especially mystery/puzzle genres. Bravo!
Now, some critique. While the story was decent compared to most games, I felt that it didn't fully explore the concept, and could've easily been told normally without losing anything in the translation. The game starts macabre and interesting, opening with a murder, but ends with a disappointing 'thud' - without wishing to spoil, it doesn't even seem like the murder was truly justified anyway. What this needed was a twist at the end (or beginning, technically), or at least some decent motivation for the player to kill a granny with a hacksaw.
In short: great, consistent art, functional if easy gameplay, cool concept, but needs a better story and climax.