More often than not, networks and cable channels cut an episode order because it's just not living up to expectations.

That's not the case with "American Horror Story," the new hit FX series. In fact, the opposite is true. The cable channel was so excited about the series, it put it on the air before it was ready to be complete. And now, there just isn't enough time to complete a two-hour season finale.

Fans instead will have to settle for 90 minutes.

"The trimming of the finale is a result of 'American Horror Story's' very aggressive production schedule, which left no breathing room," said Deadline.com's Nellie Andreeva.

Ryan Murphy and Brad Falchuk had to delay the pilot while they completed the second season of "Glee" on Fox, which had already pushed the production schedule behind. Then FX decided it wanted to move to series before Halloween, which meant production began within two weeks after cable execs saw the pilot.

Because of the complexity of the show, many episodes were done in eight days rather than the standard seven, Andreeva said, and that pushed production work even further. The series, which is currently filming, would have wrapped on Dec. 15, but that leaves almost no time for post-production as the episode is expected to air Dec. 21.

FX president John Landgraf said he considered making the first season finale just one hour, but Murphy was able to develop a plan that would shorten the original two-hour episode into 90 minutes.

If it's any consolation, Deadline.com also reports that FX is considering expanding Season 2 beyond 13 episodes.

FX wasted no time renewing "American Horror Story" for a second season, especially as the audience for the show continues to grow. It's the latest in a strong line of success for Murphy and Falchuk, beginning with "Popular" in 1999, and moving to the FX series "Nip/Tuck" in 2003. Both are now heavily involved in "Glee" on Fox, as well as "American Horror Story."

The show was a bit of a surprise to many fans of Murphy and Falchuk. Their past work, while sometimes containing somewhat dark overtones, were generally more comedic and a bit over-the-top. However, critics have hailed "American Horror Story" for its unique story and the fear it's built into many viewers. In fact, it's attracting about 3 million viewers each week, which is pretty solid for an FX series.

It's main character, the house, is actually a former convent in Country Club Park in Los Angeles. While the house itself is used for exterior scenes, all interior scenes are filmed on soundstages.

"American Horror Story" stars Dylan McDermott, Connie Britton and Jessica Lange. It airs Wednesdays on FX.