Mafia 46. Lord of the Rings.

Black Widow killed Rayner.

A small description for the murder, and there are no visible clues. Regarding Rayner's role, I'm not sure, but I like the fact that Sam was actually drowning, and he could have been described in the newspaper + they were called "half-men," meaning half a person, which already suggests a dwarf. I'm more inclined to believe this version.