Alice is dead

Wait a minute! Alice? Dead? That's not supposed to happen! And you, the rabbit, her long time partner, wake up next to her without remembering what happened. So go forth and explore around, see if you can jog your memory back and find out who's responsible.

As you gathered, this is yet another alternate universe to that of Lewis Carrol's where everything is not so innocent (although the original version isn't, but anyway!). Lots of violence, gruesome descriptions and generally messed up characters in this point'n'click adventure. It consists of three episodes, neither of which are too big so they're perfect for finishing in one sitting.

Part 1, Part 2, Part 3