Aroup Chatterjee (born in Kolkata) is the author of the book Mother Teresa: The Final Verdict, a work which challenges the widespread regard of Mother Teresa as a symbol of philanthropy and selflessness.

Chatterjee is a physician working in England. He has accused Mother Teresa of unfairly damaging the reputation of the city of Kolkata (formerly Calcutta). In his book Chatterjee claims that Mother Teresa exaggerated the work she did among the poor, that she failed to use the very large amount of money donated to her on helping the poor and that the medical care given to people in homes run by Missionaries of Charity was grossly inadequate.

Chatterjee's criticism inspired a documentary named Hell's Angel that was shown on Channel 4, a British television channel. The documentary was written by a well-known critic of Mother Teresa, Christopher Hitchens, who co-produced it with Tariq Ali. Chatterjee and Hitchens were the only two official hostile witnesses to Church procedures for the beatification of Mother Teresa in 2003.

Blessed Mother Teresa of Calcutta (Albanian: Nënë Tereza) as she is known to the Catholic Church, or Mother Teresa as she is commonly known, was born Agnes Gonxha Bojaxhiu (pronounced [aɡˈnɛs ˈɡɔndʒa bɔjaˈdʒiu]). Although born on the 26 August 1910, she considered 27 August, the day she was baptized, to be her "true birthday". “By blood, I am Albanian. By citizenship, an Indian. By faith, I am a Catholic nun. As to my calling, I belong to the world. As to my heart, I belong entirely to the Heart of Jesus.” Mother Teresa died on 5 September 1997 and is not yet a Catholic Saint. In late 2003, the leaders of the church completed the process of beatification, the third step toward possible sainthood. A second miracle credited to Mother Teresa is required before she can be recognized as a saint by the Catholic church.

Mother Teresa founded the Missionaries of Charity, a Roman Catholic religious congregation, which in 2012 consisted of over 4,500 sisters and is active in 133 countries. Members of the order must adhere to the vows of chastity, poverty and obedience, and the fourth vow, to give "Wholehearted and Free service to the poorest of the poor". The Missionaries of Charity at the time of her death had 610 missions in 123 countries including hospices and homes for people with HIV/AIDS, leprosy and tuberculosis, soup kitchens, children's and family counselling programmes, orphanages and schools.

Christopher Eric Hitchens (13 April 1949 – 15 December 2011) was an English American author and journalist whose career spanned more than four decades. Hitchens, often referred to colloquially as "Hitch", was a columnist and literary critic for New Statesman, The Atlantic, The Nation, The Daily Mirror, The Times Literary Supplement and Vanity Fair. He was an author of twelve books and five collections of essays. As a staple of talk shows and lecture circuits, he was a prominent public intellectual, and his confrontational style of debate made him both a lauded and controversial figure.

Hitchens was known for his admiration of George Orwell, Thomas Paine and Thomas Jefferson, as well as for his excoriating critiques of various public figures including Mother Teresa, Bill Clinton, Henry Kissinger and Diana, Princess of Wales. Although he supported the Falklands War, his key split from the established political left began in 1989 after what he called the "tepid reaction" of the Western left to the Rushdie Affair. The September 11 attacks strengthened his internationalist embrace of an interventionist foreign policy, and his vociferous criticism of what he called "fascism with an Islamic face." His numerous editorials in support of the Iraq War caused some to label him a neoconservative, although Hitchens insisted he was not "a conservative of any kind", and his friend Ian McEwan describes him as representing the anti-totalitarian left.