Episode 17: The Fat Guy Strangler -

Lois eventually tracks Patrick to a mental institution, where he has been confined since childhood. Believing him to be sane despite his "imaginary wife" named Marian, Lois checks him out to live with the Griffins. However, Patrick's deep-seated trauma—witnessing his mother, Babs, in a compromising position with comedian Jackie Gleason as a child—is triggered by Peter’s boorish behavior and Gleason impressions. This leads Patrick to go on a serial killing spree targeting overweight men, earning him the moniker of the "Fat Guy Strangler". Satire and Themes The episode is noted for its dual-layered satire:

The narrative begins with two coincidental events. First, Dr. Hartman bluntly informs Peter that he is overweight, prompting Peter to found the —a parody of the NAACP. Simultaneously, while Peter is demonstrating his "thinness" with a hula hoop, he accidentally uncovers a folded family photograph revealing Lois has a brother she never knew existed: Patrick Pewterschmidt , voiced by guest star Robert Downey Jr. . Episode 17: The Fat Guy Strangler

A significant portion of the humor comes from Lois’s refusal to believe Patrick is a killer, even when faced with absurdly obvious evidence, such as a dead fat guy under his bed and a half-eaten corpse in the corner. Critical Reception and Legacy Lois eventually tracks Patrick to a mental institution,

"The Fat Guy Strangler" is frequently cited as one of the best episodes of Season 4, often praised for returning to the show's peak form after a string of mixed reviews earlier that season. Critics highlighted the episode's ability to balance its dark premise with classic Family Guy tropes, such as the callback to Brian's revenge for being left in a hot car. This leads Patrick to go on a serial

" The Fat Guy Strangler ," the 17th episode of Family Guy's fourth season, remains a standout entry for its dark humor, high-profile guest appearance, and satirical commentary on social advocacy. Originally airing on November 27, 2005, the episode expertly weaves together two seemingly disparate storylines: Peter's sudden dive into "fat acceptance" activism and Lois's discovery of her long-lost, murderous brother. Plot Overview: The Secret Pewterschmidt