Question: What former Mafia hitman did Philip Carlo write the biography for?

Context paragraphs:
Joe Don Baker: Joe Don Baker (born February 12, 1936) is an American character actor and a life member of the Actors Studio, He established himself as an action star with supporting roles as a mysterious cowboy drifter in "Guns of the Magnificent Seven" (1969), and as a deputy sheriff in the western "Wild Rovers" (1971), before receiving worldwide fame for his iconic roles as a mafia hitman in "Charley Varrick" (1973), real-life Tennessee Sheriff Buford Pusser in the classic action film "Walking Tall" (1973), brute force detective Mitchell in "Mitchell" (1975), deputy sheriff Thomas Jefferson Geronimo III in "Final Justice" (1985), and as chief Jerry Karlin in the action-comedy "Fletch" (1985).

Men of Respect: Men of Respect is a 1990 crime drama film, an adaptation of William Shakespeare's play "Macbeth".  It stars John Turturro as Mike Battaglia, a Mafia hitman who climbs his way to the top by killing his boss.

Evan Wright: Evan Alan Wright (born 1966) is an American writer, known for his extensive reporting on subcultures for "Rolling Stone" and "Vanity Fair", sometimes using his full name: Evan Alan Wright.  He is best known for his book on the Iraq War, "Generation Kill".  In 2012 he wrote an expose about a top CIA officer who allegedly worked as a Mafia hitman, "How to Get Away With Murder in America."

The Darkness (comics): The Darkness is an American comic book series published by Top Cow Productions.  The series was created by Marc Silvestri, Garth Ennis, and David Wohl.  "The Darkness" is the story of Mafia hitman Jackie Estacado, who, on his 21st birthday, became the bearer of the Darkness, an elemental force that allows access to an otherworldly dimension and control over the demons who dwell there.

Philip Carlo: Philip Carlo (April 18, 1949 – November 8, 2010) was a journalist and best selling biographer of Thomas Pitera, Richard Kuklinski, Anthony Casso, and Richard Ramirez.  Carlo suffered from amyotrophic lateral sclerosis (ALS), commonly known as "Lou Gehrig's Disease".  He was bound to a wheelchair and respirator, but retained his ability to speak normally during his lifetime.  He died of the disease on November 8, 2010 at age 61.

The Valachi Papers (book): The Valachi Papers is a biography written by Peter Maas, telling the true story of former mafia member Joe Valachi, a low-ranking member of the New York-based Genovese crime family, who was the first ever government witness coming from the American Mafia itself.  His account of his criminal past revealed many previously unknown details of the Mafia.  The book was made into a film ("The Valachi Papers"), released in 1972, starring Charles Bronson as Valachi.

Frank Bompensiero: Frank "Bomp" Bompensiero (October 29, 1905 – February 10, 1977) was a Mafia hitman and longtime Caporegime in the Los Angeles crime family.  In 1956, with the death of boss Jack Dragna, Bompensiero was demoted to the rank of soldier by the new boss, Frank DeSimone.  He was the older brother of associate Salvatore "Sam" Bompensiero.  Bompensiero made a name for himself for the many killings he committed on the orders of his superiors.  Jimmy Fratianno, a close associate, once said that Bompensiero "had buried more bones than could be found in the brontosaurus room of the Museum of Natural History."

Thomas Pitera: Thomas "Tommy Karate" Pitera (born December 10, 1954) is a former Mafia hitman in the Bonanno crime family.  Pitera earned a reputation as a vicious and sadistic killer who enjoyed murdering people.  He was suspected by law enforcement of as many as 60 murders.  He was well known for his use of karate and other martial arts when fighting which is a skill he had learned at a young age.  It earned Pitera his nickname "Tommy Karate".

Jozef Roháč: Jozef Roháč a.k.a. Potkan (September 6, 1956) is a Slovak criminal, terrorist and mafia hitman, specializing in explosives.  He is mostly known for installing the explosive device in the Assassination of Róbert Remiáš and in assassinations of numerous organized crime bosses in Slovakia and Hungary.  According to newspaper SME, Roháč had at some point connections to both the Slovak and Hungarian Secret Services.  Despite international search by the Interpol, he managed to evade the law for 9 years.

Robert Mormando: Robert Mormando was an American mafia hitman who later became a government informant.

Supporting paragraphs: Philip Carlo Thomas Pitera
Answer: Thomas Pitera