When it comes to story ideas onSupernatural, not even the skys the limit.

We quickly realized we were going to run out of good urban legends in a hurry.

From bigger monsters whats up, Lucifer?

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Credit: Diyah Pera/The CW

to meta episodes Changing Channels, The Real Ghostbusters, etc.

the show started taking more risks.

All that being said, not every idea works.

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We just couldnt make it work.

I think that was the only script in 11 years that we ever abandoned.

It was just too hard to do and we just couldnt nail it.

So I guess well never get to see what Sam Winchester would look like as amonkey.

Supernaturalreturns Thursday, Oct. 13 at 9 p.m.

ET on The CW.