In mid-2009, the Round House Theatre in Bethesda, Maryland, premiered his play "The Picture of Dorian Gray", based on the novel by Oscar Wilde. That same year, Aguirre-Sacasa and artist Tonci Zonjic finished Marvel Comics' "Marvel Divas" miniseries, and he began working as a writer for the HBO series "Big Love", a position he continued in 2010 during the show's fourth season. In February 2010, he was announced to write the book for the musical adaption of the novel "American Psycho".