It's just great to see how many puns you can cram in. They really do fit the story so well. While I wish there was more of a climax, this was probably your best episode to date. I loved how it had a really cool story. Everyone had such a unique design. The voice work was awesome.
This animation was always kickass. I think this might be the longest one in the series. It actually does have an interesting plot twist. I thought maybe all the others were moles at first. Or rats. Or stool pigeons, or behind bars, or...whatever. Loved the pie/cake pun too.