TV It's Always Sunny in Philadelphia - Season 18 Episode 3 : The Gang Gets Tested It's Always Sunny in Philadelphia - Season 18 Episode 3 : The Gang Gets Tested 8.3/10 by 1385 users Dennis and Dee are diagnosed with ADHD, and even more shocking: Mac isn't. They go back to school for a do-over now that they understand their brains more better. Details Casts Posters Images Title It's Always Sunny in Philadelphia - Season 18 Episode 3 : The Gang Gets Tested Alternative Titles 酒吧五杰, It’s Always Sunny, Always Sunny, FX's Sunny Subtitle Available ETC. First Air Date 2005-08-04 Last Air Date 2026-08-17 Number of Episodes 187 Number of Seasons 18 Genres Comedy, Networks FX, Hulu, FXX, Casts Charlie Day, Glenn Howerton, Rob Mac, Kaitlin Olson, Danny DeVito Plot Keywords , Charlie Kelly Charlie Day Dennis Reynolds Glenn Howerton Ronald 'Mac' McDonald Rob Mac Dee Reynolds Kaitlin Olson Frank Reynolds Danny DeVito Episodes List It's Always Sunny in Philadelphia Season 18 :Episode 1 Frank Marries a Corpse 2026-08-17 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 2 Dennis and Dee Don't Get Rich 2026-08-17 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 3 The Gang Gets Tested 2026-08-24 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 4 2026: A Virtual Insanity 2026-08-31 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 5 The Gang Goes to the Ren Faire 2026-09-07 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 6 The War on Alcohol 2026-09-14 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 7 Episode 7 2026-09-21 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 8 Episode 8 2026-09-28 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 9 Episode 9 2026-10-05 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships.... It's Always Sunny in Philadelphia Season 18 :Episode 10 Episode 10 2026-10-12 Four egocentric friends run a neighborhood Irish pub in Philadelphia and try to find their way through the adult world of work and relationships....