'American Horror Story' thrilling story and mystery continues as some of the series' original casts will return in its season 7. It has already been picked up for the 8th and 9th seasons with upcoming batch of episodes.

As reported on US Magazine, the Emmy-winning series will offer fans some much more exciting episodes as Ryan Murphy hinted in one event that fans can really expect much on its upcoming episodes.

Murphy co-created "American Horror Story" with Brad Falchuk and they both made an important revelation about the casts in the upcoming episodes. According to them, Sarah Paulson and Evan Peters will both return for Season 7 and it can be recalled that they already appeared on several seasons of the anthology series.

However, the TV producer claimed that he is not certain if the series will still be as mysterious as the other past seasons like season 6's Roanoke which ended last November last year.

Murphy even added that they have not decided yet on how they are going to do the promotion in the next episode of the said anthology series. He even quipped that there are only three people who know what the theme of "American Horror Story" Season 7 is.

What is certain is that they already started writing about the theme and the plot, the cast is still incomplete except for Evan and Sarah as reported by NME.

But when asked about any hint for the upcoming season, the cocreator shared that it will be a modern day story and that's what they could provide at the moment. But still the management would want to keep with the fans interests and it might still related to the past episode.

Meanwhile, Fox chairman, John Landgraf was very pleased with how the series continue to entice audience which leads to high ratings and more viewers. According to him, "American Horror Story" paved way to the modern limited series revolution and with the recent episode Roanoke; it became significant until this day.