<P> The mystery surrounding Mary Alice and her family was the main storyline in the first season of the series , and it is resolved in the first - season finale . Cherry had wanted there to be a `` definite end '' to the mystery , hoping to avoid similar viewer fatigue that Twin Peaks suffered after drawing out its central mystery past its first season . ABC executives initially protested the writers ' decision to have Mary Alice purposefully kill Deirdre Taylor ( Jolie Jenkins ) , the woman whose child she had illegally purchased , prompting the writers to make Deirdre violent in order to justify Mary Alice 's actions . Although Mary Alice and her family do not have much of a leading storyline thereafter , the mystery surrounding the character 's suicide in the inaugural season is said to have informed and influenced every other season of the series . In 2006 , when asked during an interview what viewers could expect from Mary Alice for the series ' third season , Strong said that the character was `` going to be back with an attitude '' , stating : `` She will be a little less surreal , ethereal and a little more sassy , which means the show is going to be sassier . '' During the series ' final season in 2011 , the actress appears as Mary Alice 's ghost to her suicidal friend Bree ( Marcia Cross ) . Strong enjoyed filming that particular scene , as it was the only scene during the entire series that featured solely Mary Alice and Bree . She described the scene as one of her personal favorites and called it an `` extraordinary opportunity '' , saying : `` In a way , Mary Alice becomes ( Bree 's ) conscious and her guide and her muse in knowing what to do with her life . And it was an exquisitely written scene and it was really , I think in my experience on the show , one of my favorite scenes I have ever shot . '' </P>
<P> The mystery surrounding Mary Alice and her family was the main storyline in the first season of the series , and it is resolved in the first - season finale . Cherry had wanted there to be a `` definite end '' to the mystery , hoping to avoid similar viewer fatigue that Twin Peaks suffered after drawing out its central mystery past its first season . ABC executives initially protested the writers ' decision to have Mary Alice purposefully kill Deirdre Taylor ( Jolie Jenkins ) , the woman whose child she had illegally purchased , prompting the writers to make Deirdre violent in order to justify Mary Alice 's actions . Although Mary Alice and her family do not have much of a leading storyline thereafter , the mystery surrounding the character 's suicide in the inaugural season is said to have informed and influenced every other season of the series . In 2006 , when asked during an interview what viewers could expect from Mary Alice for the series ' third season , Strong said that the character was `` going to be back with an attitude '' , stating : `` She will be a little less surreal , ethereal and a little more sassy , which means the show is going to be sassier . '' During the series ' final season in 2011 , the actress appears as Mary Alice 's ghost to her suicidal friend Bree ( Marcia Cross ) . Strong enjoyed filming that particular scene , as it was the only scene during the entire series that featured solely Mary Alice and Bree . She described the scene as one of her personal favorites and called it an `` extraordinary opportunity '' , saying : `` In a way , Mary Alice becomes ( Bree 's ) conscious and her guide and her muse in knowing what to do with her life . And it was an exquisitely written scene and it was really , I think in my experience on the show , one of my favorite scenes I have ever shot . '' </P>
when do you find out why mary alice kill herself
when do you find out why mary alice kill herself
the first - season finale
the first - season finale