Ah. I think I've figured out the Issue Of The Arc here. Rika seems to have set up a Mystery To Be Solved, but neglected to actually drop the breadcrumbs that are obvious to *her* as the one behind the screen. Thinking over the contents of the arc so far, I genuinely don't remember seeing a single hint of anything that would indicate Mr. 5 and Miss Valentine are even present, save for the fact that the rum *exploded*.

To be fair, who else by this point in series have they met that could make explosions like that with no apparent tampering?

There was also the floating woman with a yellow umbrella that talked tiva man about a high bounty and black market moonshine.