In this horror-themed episode, the gang finds themselves in the middle of a literal nightmare when they attend the wedding of Dennis's ex-wife, Maureen Ponderosa, and Liam McPoyle. The night quickly devolves into chaos as a "zombie" outbreak (actually caused by tainted milk) spreads through the guests, trapping the gang inside the reception hall. Key Plot Points
: The Academy Award-winning director makes a memorable cameo as Pappy McPoyle , the patriarch of the McPoyle clan. It’s Always Sunny in Philadelphia 8×3
: The wedding is an attempt to join the two eccentric families, but the McPoyles’ obsession with "pure" bloodlines and room-temperature milk makes the event predictably unsettling. In this horror-themed episode, the gang finds themselves
The third episode of the eighth season of It's Always Sunny in Philadelphia is titled . It originally aired on October 25, 2012. Episode Synopsis : The wedding is an attempt to join