Looking for some recs...

[pattrose]

I was wondering if you could give me a couple of recs. Your favorites for each category. I just got a new Kindle and I want some Sentinel Fic on it and I want the best stuff you can think of. Hopefully it'll be something I don't have saved. Thank you for everything. Herer are the category's.
Request: Happy Ending
Request: Sad beginning and middle
Story Length: Long
Theme: Police Academy
Theme: Prison

Thank you all in advance. :)