Despite a decent turn from the always engaging Chris O'Dowd, "The Blue Scorpion" again fits the trend for this season as a run of shows that has the hook, the one central idea, but then doesn't really go anywhere with the story.
Following his father suicide, Jeff (Chris O'Dowd) discovers amongst his possessions a legendary pistol, emblazoned with blue scorpion. Already upset about his marriage ending, the grief over his father sends Jeff to a mental tipping point, and during a drunken session he sees the ghost of the guns creator who explains that the scorpion can solve all his problems, provided it's not left in the dark.
Bit of a mixed message with this one, you'd presume "guns are bad" is the overall message, and that's certainly clearer from the coda at the end, but prior to that Jeff does actually solve all his problems by shooting someone, so.... pass.
Earlier in the episode it looked more the like message was going to be about valuing objects and possessions over people, but again... that didn't really become anything. There were lots of aspects of the story that I felt might end up being the narrative thrust, such as the idea of upsetting the gun by leaving it in the dark which isn't really explored, I'm not convinced how Jeff's shooting someone really clears up all his other problems and why his ex-wife isn't concerned that he was sat outside their house in the middle of the night with a loaded gun. There's a suggestion at one point that the gun is having an effect on his mental state, but again, it's not really explored.
Like so many episodes of this run, it just drifts to an underserved conclusion.