Don't worry. I'll give him a good home.
Deirdre Taylor is Noah Taylor's daughter and Kendra Taylor's sister. She is also Mike Delfino’s deceased ex-fiancée and mother of his son, Dana (Zach Young). She gave birth to her son while addicted to drugs at Dorothy Drake Rehabilitation Center.
In March 1990, Deirdre arrived at Angela and Todd Forrest's home in Utah seeking money. Angela, wanting to help, offered to support Deirdre. Deirdre then offered Angela her baby, Dana, for money. Angela ponders the offer but hesitates. Soon after, Deirdre is admitted to the clinic after a drug overdose, and Angela sees this as a way to take the baby. Angela and her husband take Deirdre's son to Fairview, where the three rename themselves as the Young family and move to Wisteria Lane.
In 1993 Deirdre visits Mary Alice's home in Wisteria Lane, and demands to have her son back. Mary Alice objects and a fight ensues. Deirdre fights Paul off by swinging a fireplace poker at him, knocking him down. Deirdre makes a run for the stairs to grab Zach. However, Mary Alice quickly picks up a knife and stabs Deirdre in the stomach. Deirdre dies soon after. Mary Alice then runs to Zach's room where she takes his toy chest to place Deirdre's body in. Shortly after, Zach wakes up and sees his two parents standing over Deirdre's body in a pool of blood. Mary Alice and Paul bury Deirdre's body in the backyard and the following day they have the yard filled with cement for the pool.
Mary Alice's secret is the main secret of the Season One. Mike Delfino arrived in Wisteria Lane because he was asked by Noah to find out where Deirdre had gone and Mary Alice killed herself because she was blackmailed by Mrs. Huber who found out their secret thanks to her sister, Felicia.
Deirdre was last spotted at the Saddle Ranch, a cowboy bar, before she disappeared ("Anything You Can Do").