NUMB3RS “Disturbed” Season 5 Episode 21 – 100th Episode April 29, 2009 Numb3rs Watch a sneak peek of this new episode of NUMB3RS “Disturbed” Season 5 Episode 21 that will air Friday, May 1 (10:00-11:00 PM, ET/PT) on CBS. Also watch any Numb3rs episode here Episode Synopsis: NUMB3RS “Disturbed” Season 5 Episode 21 – Still feeling responsible for Don’s near-fatal stabbing, Charlie puts his focus into tracking down an unnoticed serial killer, with the agents revisiting math theories from when Charlie first started working with the team to help solve the case, on the 100th episode of NUMB3RS, Friday, May 1 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)