Question: Rich Sommer had a role in the 2006 comedy-drama based on a book by whom?

Context articles: Fairhaven (film)
Root Into Europe
Great Night Out
Linc's
Mad Men (season 1)
My Name Is David
Summer of '84
The Devil Wears Prada (film)
Rich Sommer
Weight Loss (The Office)

Fairhaven is a 2012 American comedy film written and directed by Tom O'Brien.
 The film stars Sarah Paulson, Chris Messina, Rich Sommer, Alexie Gilmore, Natalie Gold and Maryann Plunkett.
 The film was released on January 11, 2013, by Starz Digital.
Root Into Europe is an ITV comedy-drama based on the character from William Donaldson's book "The Henry Root Letters".
 Five episodes Written by Donaldson and Mark Chapman and produced by Aspect Film & TV for Central Independent Television, were first broadcast in May and June 1992.
 The series starred George Cole as Henry Root, and Pat Heywood as his wife, Muriel.
Great Night Out is an upbeat British comedy-drama based in Stockport, North-West England that aired on ITV in early 2013.
Linc's is an American comedy-drama based in a bar in Washington D.C..
 The series starred Steven Williams, Pam Grier and Golden Brooks, and aired on Showtime for two seasons from 1998 to 2000 before being cancelled.
The first season of the American television drama series Mad Men premiered on July 19, 2007 and concluded on October 18, 2007.
 It consisted of thirteen episodes, each running approximately 47 minutes.
 AMC broadcast the first season on Thursdays at 10:00 pm in the United States.
 Actors Jon Hamm, Elisabeth Moss, Vincent Kartheiser, January Jones, Christina Hendricks, Bryan Batt, Michael Gladis, Aaron Staton, Rich Sommer, and Maggie Siff receive main cast billing.
My Name Is David is a 2015 American drama film produced by Keith Powell and Jonathan Whittaker, written by Howard Emanuel and Keith Powell, and directed by Chris Gallego Wong.
 The film stars Keith Powell as David, a prescription drug addict who finds an abandoned baby on the subway.
 The film also stars Judy Reyes, Adepero Oduye, Otto Sanchez, Anthony Chisholm, and Rich Sommer.
 It had its premiere at the San Luis Obispo International Film Festival in March 2015.
 As a narrative device, none of the characters are named, with the exception of the main protagonist, David.
Summer of '84 is an upcoming American drama thriller film directed by François Simard, Anouk Whissell and Yoann-Karl Whissell.
 It stars Graham Verchere, Judah Lewis, Caleb Emery, Cory Gruter-Andrew, Tiera Skovbye, and Rich Sommer.
The Devil Wears Prada is a 2006 American comedy-drama film based on Lauren Weisberger's 2003 novel of the same name.
 This screen adaptation stars Meryl Streep as Miranda Priestly, a powerful fashion magazine editor, and Anne Hathaway as Andrea ("Andy") Sachs, a college graduate who goes to New York City and lands a job as Priestly's co-assistant.
 Emily Blunt and Stanley Tucci co-star as co-assistant Emily Charlton and art director Nigel, respectively.
Richard Olen Sommer II (born February 2, 1978) is an American actor, best known for his portrayal of Harry Crane on the AMC drama series "Mad Men".
 He is also known for his roles in the comedy-drama films "The Devil Wears Prada" (2006), "Celeste and Jesse Forever" (2012), "The Giant Mechanical Man" (2012), and "Hello, My Name Is Doris" (2015).
"Weight Loss" is the collective name for the first and second episodes of the fifth season of the American comedy television series "The Office", and the show's 73rd and 74th episodes overall.
 Written by Lee Eisenberg and Gene Stupnitsky, and directed by Paul Feig, the episode first aired as a single 60 minute show in the United States on September 25, 2008 on NBC.
 "Weight Loss" guest stars Amy Ryan as Holly Flax, Dale Raoul as Ronni, and Rich Sommer as Alex.