Criminal Minds Season 5 Episode 22 (Criminal Minds s05e22) with title “The Internet Is Forever” airs on Wednesday, May 19th 2010 at 09:00 pm via CBS.
Here is summary for Criminal Minds Season 5 Episode 22 :

The BAU team are brought in to profile a serial killer who uses the internet and locates his victims on social networking sites.

Few hours after original series aired on TV, online streaming video for Criminal Minds Season 5 Episode 22 usually available on Net and of course, if video available, as soon as possible will show you where you can watch this episode for free.