Grimm Season 6 Episode 12, "Zerstörer Shrugged": Forty-two minutes of normally fairly intelligent characters making brain-meltingly stupid decisions, combined with a villain whose motivation pretty much boils down to "for the evulz." In fact, let's go the whole hog and mention the entire plotline leading up to Zerstörer's release. Anyone hoping for some sort of awesome, epic conclusion to the mystery of the keys (introduced in the very first episode of the series!) was likely sadly disappointed. - Katie
This Is Us
The This Is Us season finale? It was such a lackluster episode and actually just felt more like a filler episode than the filler episodes did. It was incredibly focused on Jack and Rebecca and was extremely disappointing that they didn’t reveal how Jack died, or really give any indication. Also, the Big 3 were only shown for a split second on giant cliffhangers for their stories next season, which wasn’t worth it or worth the wait. - Jay
Days of Our Lives
This ridiculous trapped on an island story on Days of Our Lives. It's only been going on a week and it feels like it's been a year. What a waste of good characters and actors. - Jack
There was so much hype about the traitor in the White House on Designated Survivor, I thought for sure it was going to be a significant insider. Instead, it was a guy who we had just been introduced to that hour. The reveal was a complete disappointment and a waste of time, but the show did make it up in the epic way they caught the traitor. For that, they deserve forgiveness for their initial blunder. - Lisa
Most of the Lyon family became unlikeable this season on Empire. The only one worth rooting for was Cookie, and part of that was because she was still funny as hell. The show likes to pay homage to its soapy roots, but the whole amnesia storyline was a step too far. Add in the fact that it came when Lucious finally changed his ways. Sigh. - Paul
Quantico is one of those shows that should have 13 episode seasons. The amount of filler on Quantico Season 2 was horrific. The multiple timelines for most of the season were confusing. Do we really need another season? The story was tied up for the most part. - Paul.