Question: What author of several best-selling books also wrote The Scarlet Slippers?

Context paragraphs:
Philip Pullman: Philip Pullman CBE, FRSL (born 19 October 1946) is an English novelist.  He is the author of several best-selling books, most notably the fantasy trilogy "His Dark Materials" and the fictionalised biography of Jesus, "The Good Man Jesus and the Scoundrel Christ".  In 2008, "The Times" named Pullman one of the "50 greatest British writers since 1945".  In a 2004 poll for the BBC, Pullman was named the eleventh most influential person in British culture.

Victor Lasky: Victor Lasky (7 January 1918 – 22 February 1990) was a conservative columnist in the United States who wrote several best-selling books.  He was syndicated by the North American Newspaper Alliance.

Maurice Mességué: Maurice Mességué (14 December 1921 – 16 June 2017) was a French herbalist and author of several best-selling books on herbal medicine and cooking with herbs.  In his autobiography he claims to have treated, among others, Winston Churchill, Chancellor Adenauer of Germany, and the future Pope John XXIII.

Max Rafferty: Maxwell Lewis Rafferty Jr. (May 7, 1917 – June 13, 1982) was an American writer, educator, and politician.  The author of several best-selling books about education, Rafferty served two terms as California State Superintendent of Public Instruction and ran unsuccessfully in 1968 for the U.S. Senate as the Republican nominee, losing to Democrat Alan Cranston.

I Was a Rat! or The Scarlet Slippers: I was a Rat!  or The Scarlet Slippers is a children's novel written by British author Philip Pullman.  It was published in 1999.

Henry Beard: Henry Nichols Beard (born June 7, 1945) is an American humorist, one of the founders of the magazine "National Lampoon" and the author of several best-selling books.

Glenn Greenwald: Glenn Edward Greenwald (born March 6, 1967) is an American journalist and author, best known for his role in a series of reports published by "The Guardian" newspaper beginning in June 2013, detailing the United States and British global surveillance programs, and based on classified documents disclosed by Edward Snowden.  Greenwald and the team he worked with won both a George Polk Award and a Pulitzer Prize for those reports.  He has written several best-selling books, including "No Place to Hide".

Nick Nanton: Nick Nanton is an award winning director, agent, and author.  He is a 5 time Emmy Award winner for directing and producing the short films Jacob's Turn, Esperanza, Mi Casa Hogar, and Visioneer.  Nanton is a 13 time Telly Award winner and has co-authored several best-selling books.  He is the founder and CEO of The Dicks and Nanton Celebrity Branding Agency.

I Was a Rat: I Was a Rat is a British-Canadian children's drama television series broadcast on BBC One from 9 to 23 December 2001, based on the popular children's novel "I Was a Rat!  or The Scarlet Slippers" by Philip Pullman.  It was aired in the Sunday tea-time slot which traditionally accommodates a children's drama series in the run-up to Christmas.  The series was produced by Andy Rowley and starred Calum Worthy in the leading role, alongside Tom Conti and Brenda Fricker.  It was adapted by Richard Carpenter, who won a BAFTA award for the work.

Midnight Explosion: Midnight Explosion is the third and final album by Austrian singer Penny McLean, released in 1978.  The album was not a success, and its only single did not chart.  At the time Penny reunited with Ramona & Rhonda for one final Silver Convention single, 1979's "Café Au Lait / Rollermania" which was also a flop.  After the album she recorded five more singles, all without success, also released were three compilation albums.  She laid the music behind and launched herself as an author, writing about esoteric subjects with several best-selling books to her credit.  The album received favorable reviews, with Jason Kantof giving 4.5 stars out of 5.  An unofficial CD was released in Russia.

Supporting paragraphs: I Was a Rat Philip Pullman
Answer: Philip Pullman