Maura Tierney is an American actress known for her versatile performances in film and television. She gained widespread recognition for her role as Abby Lockhart on the popular medical drama series ER, which aired from 1999 to 2008. Tierney has also appeared in notable films such as The Good Mother and Liar Liar. In addition to her work on ER, Tierney starred in the critically acclaimed series The Affair, earning her a Golden Globe nomination. Her career spans over three decades, showcasing her talent in both comedic and dramatic roles. Tierney continues to be a respected figure in the entertainment industry.