Question: Truth is based on the memoir by which news producer and author?

Context paragraphs:
Truth (2015 film): Truth is a 2015 American political docudrama film written and directed by James Vanderbilt in his directorial debut.  It is based on American journalist and television news producer Mary Mapes' memoir "Truth and Duty: The Press, the President and the Privilege of Power".  The film focuses on the Killian documents controversy, and the resulting last days of news anchor Dan Rather and producer Mary Mapes at CBS News.  It stars Cate Blanchett as Mapes and Robert Redford as Rather.

Mary Mapes: Mary Alice Mapes (born May 9, 1956) is an American journalist, former television news producer, and author.  She was a principal producer for CBS News, primarily the "CBS Evening News" and primetime television program "60 Minutes Wednesday".  She is known for breaking the story of the Abu Ghraib torture and prisoner abuse scandal, which won a Peabody Award, and the story of Senator Strom Thurmond's unacknowledged biracial daughter, Essie Mae Washington.  In 2005, she was fired from CBS for her part in the Killian documents controversy.

News producer: A news producer is one of the most integral members of any news-production team.  The news producer takes all the elements of a newscast (packages, video, graphics, etc.) and compiles them into a cohesive show.

Keith Summa: Keith Summa is an American television news producer and executive.  Summa currently serves as vice president of news partnerships for Univision.  From 2007 to 2012 Summa headed CBS News' investigative unit.  For 15 years prior he was a producer for ABC News and Peter Jennings Productions.  Summa has received the George Polk Award, the Alfred I. duPont–Columbia University Award, the Peabody Award, and several News & Documentary Emmy Awards for his work in television news production.

Tom Aspell: Tom Aspell (1950 – February 11, 2013) was a New Zealand-born U.S. television news producer, foreign correspondent, and cameraman.  He was employed by NBC News for 28 years and previously worked for ABC News, CBS News, and Visnews.

Susan Zirinsky: Susan Zirinsky (born March 3, 1952) is an American journalist and television news producer.  She has been the executive producer of "48 Hours" since 1996.  She also produces breaking news specials for CBS News.  She won a Primetime Emmy Award in 2002 for producing the documentary "9/11".

Tabloid Baby: Tabloid Baby is a 1999 memoir and exposé by veteran journalist and television news producer Burt Kearns detailing his years as producer of the leading tabloid television shows of the 1990s: "A Current Affair" and "Hard Copy".  Published shortly before broadcast news was displaced by cable, the book is notable for its argument that “tabloid television” was co-opted by network news shows such as CBS’s "48 Hours" which premiered in 1988 and NBC's "Dateline" which premiered in 1992, as well as demonstrating the emerging audience psychology that would lead to the explosion of reality shows in the 2000s and the openly subjective reporting that would find its apotheosis in Fox News and MSNBC on cable.

Madeline Amgott: Madeline Rochelle Amgott (August 31, 1921 – July 19, 2014) was an American television news producer.  A pioneer of early television news, Amgott was one of the first, and only, women to producer television news shows during the 1950s and 1960s.

Maneet Ahuja: Maneet Ahuja (born 1984) is an American author, journalist, television news producer, and hedge fund specialist.  She is a producer of CNBC's morning business news program, "Squawk Box".  Her 2012 book, "The Alpha Masters: Unlocking the Genius of the World's Top Hedge Funds", was published by John Wiley & Sons and nominated for an FT / Goldman Sachs Book of the Year Award. " Forbes" named her to their "30 Under 30" list of media figures for 2012.  Ahuja has also produced a number of business events including CNBC's Delivering Alpha conference, a hedge fund summit that she created and co-developed.  Ahuja serves on the Council of Advocates for Mt. Sinai Hospital and is on the United Nations Commission on the Status of Women.  Her next book is on Sovereign Wealth Funds.

Neal Shapiro: Neal B. Shapiro (born March 9, 1958) is the President and CEO of WNET.  He worked previously as the President of NBC News and the executive producer for "Dateline NBC".  Prior to this Shapiro spent 13 years as a news producer at ABC News.

Supporting paragraphs: Truth (2015 film) Mary Mapes
Answer: Mary Alice Mapes