It's Always Sunny in Philadelphia Season 8 Episode 3
The Maureen Ponderosa Wedding Massacre
It’s Friday the 13th and Dennis is on a mission to ensure his ex-wife Maureen Ponderosa marries Liam McPoyle, so he crashes their wedding. However, Frank has other intentions thanks to Liam’s dependent brother (and suspected lover), Ryan. It doesn’t get much weirder or scarier than a McPoyle-Ponderosa wedding especially when The Gang ends up arrested on charges of mass homicide. The fingers of blame fly as The Gang tries to get their story straight to the cops; it's a story that includes vampires, zombies, and 'enhancements'.