Board Thread:Spoilers!/@comment-24934360-20140512191810/@comment-6175354-20140518030906

Rena Charming wrote: The creators had stated before the finale aired that he wouldn't be in it. There was never ever any actual confirmation that he would, just that spring finale preview that GUESSED at that. I took it with a grain of salt. I guess other people didn't. Exactly.... this is not the first time, something like this happened.

It was like how media outlets assumed, that Michael Socha will be a series regular for Season 4. The creators only said, that the Knave/Will would crossover. Never once did they mention, that he would be a regular.