It's Always Sunny in Philadelphia

FXX | 10:00 pm

While Mac (Rob McElhenney) spends the day at a seminary with a young priest to learn what is involved in following that vocation, Frank and Dennis (Danny DeVito, Glenn Howerton) lay an elaborate trap at the castle to mortify Charlie's (Charlie Day) pen pal. Meanwhile, Dee (Kaitlin Olson) gets ready for a date with an Irish doctor, only to find herself sinking into a bog in the new episode "Dee Sinks in a Bog." The season finale immediately follows.