The twelfth season of the American horror anthology television series American Horror Story, subtitled Delicate, is based on Danielle Valentine's book Delicate Condition and the first and only season of the series to be based on a novel instead of having an original storyline. The ensemble cast includes returnees Emma Roberts, Denis O'Hare, Dominic Burgess, Zachary Quinto, Billie Lourd, Grace Gumm... Wikipedia