Killer Chat Don and Charlie track a killer who has murdered several sex predators. The predators took advantage of teenage girls they met in chat rooms. Meanwhile, Larry is ready to begin an adventure with NASA. Details Casts Videos Galleries Posters Season Lists Title Killer Chat Genres Crime Drama Mystery Release Date 2006-12-15 Episode Runtime 00 Hours 45 Minutes Season Number 3 Episode Number 11 Production Companies Scott Free Productions Rob Morrow... Don Eppes... David Krumholtz... Charlie Eppes... Judd Hirsch... Alan Eppes... Alimi Ballard... David Sinclair... Peter MacNicol... Larry Fleinhardt... Navi Rawat... Amita Ramanujan... Diane Farr... Megan Reeves... Dylan Bruno... Colby Granger... Numb3rs Pilot (Math) (Trailer) Original Size (3840x2160) Original Size (3840x2160) Original Size (1280x720) Original Size (1800x2700) Original Size (1600x2400) Original Size (680x1000) Original Size (1600x2400) Original Size (960x1440) Original Size (680x1000) Original Size (1000x1500) Original Size (680x1000) Original Size (680x1000) Original Size (680x1000) Original Size (1536x2048) Original Size (1080x1440) Original Size (1024x1536) Original Size (680x1024) Original Size (1080x1440) Original Size (1080x1440) Original Size (1080x1440) Original Size (1080x1440) Original Size (564x846) Original Size (1080x1440) Original Size (564x750) Season 1 13 Episode(s) 2005-01-23 Season 2 24 Episode(s) 2005-09-23 Season 3 24 Episode(s) 2006-09-22 Season 4 18 Episode(s) 2007-09-28 Season 5 23 Episode(s) 2008-10-03 Season 6 16 Episode(s) 2009-09-25