Warning: Spoiler Alert
I really liked the idea of the Pied Piper being some sort of crazy ninja and loved them showing him going all Nightcrawler all over the place. But I'll also admit that the use of the Pied Piper made me want season four of "Grimm" to hurry up and come on (and only partly cuz I want to know how Nick is going to get his Grimm powers back (cuz let's be real, we all know that he's going to ... you can't have a show about a Grimm when the main character isn't a Grimm anymore)).
The thing that I really found interesting about this episode wasn't even in the A storyline ... it was the stuff in the B line ... the stuff with Irving. Of course someone who is completely evil is going to try and trick people into serving him, or doing stuff for him, but there has to be some sort of loophole that the gang can use since Irving was tricked into becoming one of War's bros. It may turn out to be something rather tricky, since he signed that contract in blood ... and did do it willingly (even if he really should have read the thing before he signed it). I don't get the impression from the way that the writers have been writing his character that they don't like him (I get rather the complete opposite impression, in fact), or that they want him to turn into one of War's lackies. So, there has to be some kind of loophole that the gang will find later on (and I'm kind of hoping that it's Jenny that finds it, since it's always awesome when she is able to get one up on Captain Skinnyjeans and her sister).
I'm also wondering what is going on with that bone that Henry wanted, what sort of spell he has in mind for it, and if that spell has anything to do with the house that he was born in. I almost get the impression that we might be supposed to think that it has something to do with Abbie and Ichabod directly, but I think that it will end up being used against them in a more roundabout way. The fact that the bone had something to do with the Piper and family (it being what the Piper used to perpetuate his revenge against this one family through the generations), I wonder if Henry isn't doing something with it that has to do with the house that he was born in. He quite obviously has something planned when it comes to that house, and I almost have the feeling that it might be something familial. It still might be that he is using the house as some sort of base of operations to heighten his power (what with the connection that it has to his birth), but with the addition of the bone ... it makes me wonder if he might have plans for Ichabod and Katrina (something more than just that one is a Witness, and they are both working for the forces of Good).
And with the way that the writers are focusing in on War and Death, it makes me think that Conquest/Pestilence and Famine may not show up all that much in Show. It would awesome if they showed up more than those couple of times that they have (and having Conquest/Pestilence in more than just the showrunners showing the four of them riding together). What would be kind of cool (if the writers could pull it off) would be if they kind of dealt with the riders in turn ... once they were able to defeat/push back War or Death, one of the others came forward to pick up some of the evil slack. But granted, War and Death are the two that seem like they would be more interesting from a writing (and viewing) standpoint ... unless they built up the whole Anti-Christ theme that is associated with Conquest. That could turn out to bring some really interesting TV.