Danny Devito, Rob McElhenney, Charlie Day, and a blow up doll of Glenn Howerton
Movies - TV

It’s Always Sunny’s Nightman Live Shows Only Exist Thanks To An Incorrect Ad

By CAROLINE MADDEN
On Nov. 20, 2008, the fourth season of "It’s Always Sunny in Philadelphia" concluded with a showing of Charlie’s original musical, "The Nightman Cometh."
The musical tells a story about a princess in lust with a little boy who transforms into the Dayman to conquer the Nightman, all while dodging a greedy Troll.
Don McCloskey, musician and friend of the "Always Sunny" actors, explained to GQ that on a whim and hoping to sell some more tickets, he invited the cast to perform a song or two.
However, what was supposed to be a one-off performance at McCloskey’s show at the Troubadour in West Hollywood ended up becoming something much bigger.
While McCloskey told the Troubadour to advertise special guests, the venue billed it as "The Cast of 'It’s Always Sunny in Philadelphia' Performing ‘The Nightman Cometh' Live."
With this headline, the show sold out in seven minutes, causing them to add a second performance. This inspired the cast to actually put on their own full-length production.
In September 2009, they toured the musical in six cities. The live performances and the positive audience response made the cast realize that their television series was a success.