It says something in the confidence a show has in their ensemble when the main character takes off for an episode and lets the various supporting characters take center stage. This has happened a few times on Flash now, and they pull it off pretty well.
This season of the Flash seems to be hitting more emotional notes than going for the fun adventure the show started out as. I didn’t care for the two part “Family Matters” story line with all its strained analogies, and then “Goodbye Vibrations” saw my favorite character leave the series.
Last episode, a few twists were revealed as Iris was trapped in the mirror dimension. There was also a bit more about the mysterious Black Hole organization, who I think it’s safe to say will be the looming big bad of the season’s second half.