September's Books on Screen roundup includes the feature films IT and American Assassin; the season three premiere of "Outlander" on Starz and the movie Our Souls at Night available on Netflix; and the DVD releases of The Immortal Life of Henrietta Lacks and Captain Underpants: The First Epic Movie.

In Theaters

Tulip Fever
Release Date: September 1st (limited)
Based on: TULIP FEVER by Deborah Moggach

IT
Release Date: September 8th (wide)
Based on: IT by Stephen King

American Assassin
Release Date: September 15th (wide)
Based on: AMERICAN ASSASSIN by Vince Flynn

Rebel in the Rye
Release Date: September 15th (limited)
Based on: J. D. SALINGER: A Life by Kenneth Slawenski

Kingsman: The Golden Circle
Release Date: September 22nd (wide)
Based on: Kingsman: The Secret Service comic book series by Mark Millar, Matthew Vaughn and Dave Gibbons

Victoria & Abdul
Release Date: September 22nd (limited)
Based on: VICTORIA & ABDUL: The True Story of the Queen's Closest Confidant by Shrabani Basu

On TV
 

Film Release

Our Souls at Night
Release Date: September 29th on Netflix
Based on: OUR SOULS AT NIGHT by Kent Haruf

Series/Season Premieres

"Outlander"
Air Dates: Sundays at 8pm ET/PT on Starz; Season Three Premiere on September 10th
Based on: Outlander series by Diana Gabaldon

"Spirit Riding Free"
Release Date: Season Two available September 8th on Netflix
Based on: SPIRIT RIDING FREE: The Adventure Begins by Suzanne Selfors

"Marvel's Inhumans"
Air Dates: Fridays at 8pm ET/PT on ABC; Series Premiere on September 29th
Based on: The race of superhumans appearing in various comic books published by Marvel Comics

Ongoing Series

"Chesapeake Shores"
Air Dates: Sundays at 9pm ET/PT on Hallmark Channel
Based on: Chesapeake Shores series by Sherryl Woods

"Get Shorty"
Air Dates: Sundays at 10pm ET/PT on EPIX
Based on: GET SHORTY by Elmore Leonard

On DVD
 

The Immortal Life of Henrietta Lacks
DVD Release Date: September 5th
Based on: THE IMMORTAL LIFE OF HENRIETTA LACKS by Rebecca Skloot

Captain Underpants: The First Epic Movie
DVD Release Date: September 12th
Based on: Captain Underpants series by Dav Pilkey

Wonder Woman
DVD Release Date: September 19th
Based on: DC Comics character of the same name, created by William Moulton Marston