This was amazing! I love the twist and is a little jumpy but otherwise great!

Omg, I really wanna see more of this, especially more of the PJO crew... Update soon!
Angela

Nice... Apollo and a spy...

Well the spy - Jackson Hunt - does that mean he's hunting for Percy Jackson for some reason or other and the trust of one demigod - Castle - would get him where he wants... except Castle doesn't know anything and has never even met Percy...

Still... I wonder if Castle WILL find out about being a demigod anyway... because he's investigating aa muder committed by a monster with Beckett or sometihng... or because Apollo tells him. (Well everyone ELSE around him knows, maybe he should know too).

I've never read the books, just seen the films a couple of times, but I really enjoyed this crossover! I would not be opposed to seeing more of it, in fact :) thank you for writing and sharing!

Neat story. Can't wait for the next chapters to come.

Coolness.

This was neat! And the Hawkeye part... well, I thought that it was the highlight of the fic, really. I'd been thinking about how similar Clint and Castle look, and I'm glad that someone else recognized it as well. So yeah, awesome job! :)

Will Richard eventually find out maybe?

Please write more Closing Pandora's Box! This is great! :D
I'm waiting for Beckett and Castle finding out to be honest.

This works. PJO crosses with just about everything, doesn't it? Criminal Minds, Harry Potter, Avengers (liked Hawkeye's cameo, btw), Stargate, Castle. Plausible bit of prose.

Wow, to think that Castle and POJ crossovers actually exist! I was simply bored outta my mind so I was putting in unusual search parameters and, again WOW!
This is such an incredible story. Fun and funny, sensitive and warm. Its lovely!

This was an absolutely adorable two-shot! Well written and great story! Thank you for sharing!

Love this mini story.

This is interesting. You shouldn't be afraid to write more of it if you get any ideas.

This is really cute, and you know it would be a laugh now to expand on this whole story especially since Nathan is now playing Hermes in the new Percy Jackson film. I do hope you write more!