Numb3rs Fanfic Finders

Hi there! I'm looking for a kinda angsty, Charlie-centric fic I read a few weeks back. It involves Alan getting kidnapped by a psycho that Charlie met when he was in training for the CIA or NSA at a secret camp in New Mexico. There are flashbacks to his time in training, and most of the story involves Charlie working to get Alan back, with the help of some old friends. Don onyl just shows up at the end, pretty much.

I have no idea where I read it, or anything about the author. If anyone knows it, I would love a pointer in its direction. Thanks!