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It's Always Sunny in Philadelphia (2005 – ...)

2005 • 18 seasons • Comedy • TV-MA
On October 3, 2026
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It's Always Sunny in Philadelphia — Season 4

  • Sep 18, 2008First aired
  • 13 episodesin this season
  • 21mavg. runtime
#Episode nameAir dateRuntimeRating
0121mMac and Dennis: ManhuntersFrank's prized cuts of meat have been disappearing, the culprit revealed to be Charlie and Dee, who retaliate with a gruesome act of their own. Consumed by a primal hunger, they embark on a desperate quest for human flesh. Meanwhile, Mac and Dennis, ever eager for a thrill, taunt Frank about his hunting of vulnerable creatures, suggesting the true challenge – and a far more satisfying pursuit – would lie in hunting something capable of resistance: a human being.Sep 18, 20088.7Sep 18, 200821m8.70222mThe Gang Solves the Gas CrisisCharlie, Mac, and Dennis devised a scheme to capitalize on the escalating cost of gasoline. Their strategy involved buying in bulk now with the intention of selling later for a profit. Predictably, their efforts encountered unforeseen complications. Meanwhile, Dee, upon learning of Bruce's intention to donate the family fortune to a Muslim cultural center, saw an opportunity for personal gain. She and Frank conspired to thwart his plans and secure the inheritance for themselves.Sep 18, 20088.9Sep 18, 200822m8.90321mAmerica’s Next Top Paddy’s Billboard Model ContestPaddy's was facing a severe financial crisis, a direct result of the gang's recent ventures. In an attempt to remedy the situation, Frank purchased a billboard to advertise the bar. However, Dee opted for a more modern approach, planning a viral video for YouTube. Charlie readily joined her efforts, leaving Frank and Mac to organize a contest featuring attractive models for the billboard. Dennis, of course, saw this as an opportunity to demonstrate his own superiority.Sep 25, 20088.5Sep 25, 200821m8.50421mMac’s Banging the WaitressThe revelation hit Charlie like a physical blow: the waitress was seeing someone else. He turned to Mac, his supposed closest friend, demanding information about this rival and, more forcefully, asking for a violent confrontation. But the truth coiled around them with cruel irony. Mac was the very person the waitress had been seeing. Heartbreak twisted in Dennis’s gut; the realization that he wasn't truly Charlie’s confidant spurred him to desperate measures, a clumsy attempt to regain the frienSep 25, 20088.4Sep 25, 200821m8.40521mMac and Charlie Die (1)Mac and Charlie orchestrated a disappearance, a carefully constructed illusion of death, to evade the retribution of Mac’s father. The man had recently been released from prison, and vengeance was clearly his sole purpose.Oct 2, 20088.3Oct 2, 200821m8.30621mMac and Charlie Die (2)In the aftermath of their friends’ departure, Dennis, Frank, and Dee each navigate the shifting landscape of their lives with distinct approaches to the absence. They discover individual paths for bearing the weight of this perceived loss.Oct 2, 20088.0Oct 2, 200821m8.00721mWho Pooped the Bed?Charlie and Frank awoke to a most unpleasant discovery: excrement in their bed. Neither man would admit responsibility, so they enlisted the help of Mac and Dennis in a scientific endeavor to determine the culprit. Meanwhile, Dee, desiring a more refined approach, invited the waitress and Artemis to a night out among the women.Oct 9, 20088.4Oct 9, 200821m8.40821mPaddy’s Pub: The Worst Bar in PhiladelphiaThe newspaper critic vanished after his scathing review of Paddy's pub, a piece that declared it the city’s most wretched watering hole. He was taken by the men who run the establishment, a swift and silent abduction born of offended pride.Oct 16, 20088.3Oct 16, 200821m8.30923mDennis Reynolds: An Erotic LifeThe discovery of Dennis’s erotic memoir presented Mac and Frank with an opportunity for financial gain. Simultaneously, Dee and Charlie embarked on an experiment in empathy, resolving to spend a day inhabiting each other’s lives.Oct 23, 20088.2Oct 23, 200823m8.21021mSweet Dee Has a Heart AttackFollowing Dee’s heart attack, she and Dennis resolved to embrace a healthier way of life. Separately, Charlie and Mac sought employment in the corporate world, primarily to secure health insurance coverage.Oct 30, 20088.3Oct 30, 200821m8.31121mThe Gang Cracks the Liberty BellThe group deliberately distorted history, asserting that Paddy's Pub had damaged the Liberty Bell, a calculated effort to elevate their unremarkable establishment to the status of a Philadelphia landmark.Nov 6, 20087.8Nov 6, 200821m7.81221mThe Gang Gets Extreme: Home Makeover EditionDriven by a shared ambition to realize their own aspirations, the group embarks on the task of transforming a family's home in a way no one anticipates.Nov 13, 20088.5Nov 13, 200821m8.51321mThe Nightman ComethThe season culminated with Charlie rallying his friends to collaborate on a rock opera, meticulously crafting it around his signature song, "Nightman."Nov 20, 20089.0Nov 20, 200821m9.0