FORSYTH COUNTY -- For the ninth year in a row, Forsyth Reads Together is back again, this time featuring bestselling author, screenwriter and television producer Dennis Lehane.

The author, best known for his books “Shutter Island” and Mystic River,” will speak and sign books at the Lanier Technical College Forsyth Conference Center on Tuesday, Sept. 27 at 7 p.m.

While admission is free, the Forsyth County Public Library requests that attendees register in advance.

Both bestselling books were subsequently made into films, and Lehane is also credited for his screenwriting of HBO’s “Boardwalk Empire” and “The Wire.”

Leonardo DiCaprio starred in “Shutter Island,” and Clint Eastwood directed “Mystic River.”

“Mystic River” also starred actors Sean Penn and Tim Robbins, and other of Lehane’s books-turned-films featured big-name actors, as well.

Forsyth Reads Together is a countywide event that encourages the community to read, discuss and participate in programs centered on one book – it has in recent years been the library’s most-attended program of the year. This year’s selection is Lehane’s “Mystic River.”

The book follows Sean Devine, a struggling Boston investigator, as he confronts painful memories from his past. When a childhood friend’s daughter is brutally murdered in a public park, the investigation brings Sean face-to-face with a vigilante killer and a man with a dangerous secret.

Lehane will speak to the audience about his experience as a novelist and screenwriter before holding a question-and-answer session.

His books will be available for purchase at the event.

In addition to the talk, county libraries will host other related events.

“This year’s book selection is set in a fictional Irish-Catholic neighborhood of Boston, so we’re also offering a program on tracing Irish genealogical records through U.S. newspapers at the Post Road Library,” said Laura Bradley, Forsyth County Public Library program manager.

“The Cumming Library will [also] host a new virtual tourism presentation focusing on the history and culture of Boston.”

The Post Road, Cumming and Sharon Forks libraries will also host book club discussions on “Mystic River.”

The Cumming Library will hold “Demystified: From Page to Screen” on Tuesday, Sept. 20 at 7 p.m., where, after a screening of the documentary “Mystic River: Beneath the Surface,” Ken Feinberg, owner and director of Creative Studios in Atlanta, will discuss the process of adapting a book for the big screen, general screenwriting and Georgia’s “growing influence on the film industry.”

Last year’s speaker was Kathryn Stockett, known for her bestselling book “The Help.” The book was also made into a movie, with actress Octavia Spencer winning the 2012 Academy Award for Best Actress in a Supporting Role.

For more information and to register for the event, visit forsythpl.org.