CHATHAM — In what promises to be a memorable evening, the Chatham Orpheum Theater will hold a special screening of the new feature film “Patriots Day” on Jan. 13 as part of a fundraiser for the Arrendondo Family Foundation.

The evening features a reception and post-show question and answer session with authors Casey Sherman and Dave Wedge. The two wrote the bestselling book “Boston Strong,” the inspiration for the film. Patrons will also have a chance to meet Carlos Arrendondo, known best as the cowboy-hat-wearing hero of the Boston Marathon bombings, whose foundation supports military families that have experienced a suicide.

The screening is paired with a fundraising dinner the following night at the Chatham Inn at 359 Main.

“I am greatly looking forward to returning to Chatham for these wonderful events at the Orpheum and the Chatham Inn at 359 Main,” Sherman said. Sherman is well known as co-author of “The Finest Hours,” the book about the 1952 Pendleton rescue off Chatham that became one of the biggest feature films of 2016.

In “Boston Strong,” Sherman and Wedge provide a riveting account of the 2013 terror attack and some of the heroes of that dark day, including Arrendondo. “Patriots Day” is set to open in theaters nationwide on Jan. 13, the day of the Chatham event.

“Carlos and the film will refresh your spirit and the proceeds will go to a foundation that helps so many in so many special ways,” Sherman said.

The screening will take place on Friday, Jan. 13 at 7 p.m., following the reception with Sherman, Wedge, Arrendondo and his wife, Melida, at 6 p.m. Tickets for the event are $20 per person, and can be purchased online at www.ChathamOrpheum.org. In the Q-and-A following the screening, Sherman and Wedge will take patrons behind the scenes of their collaboration with the filmmakers of “Patriots Day,” and Arredondo will describe the harrowing moments after the bomb that made him an international hero.

On Saturday, Jan. 14 at 5:30 p.m., the Chatham Inn at 359 Main will hold a special dinner to

benefit the Arredondo Family Foundation. The price for the four-course dinner is $75 per person,

$95 with two wine pairings, and $125 with four wine pairings. The Arredondos and Casey Sherman

will be in attendance and Casey will be signing copies of “Boston Strong” for dinner

guests. For dinner reservations, call 508-945-1468.

On April 15, 2013, Arrendondo was on the sidelines of the marathon to cheer on a team of runners from the National Guard when the pressure cooker bombs detonated near Copley Square. He helped clear debris from victims of the bombing, and helped rush a severely injured man to help using a wheelchair. His image, captured in many news photographs, became a symbol of the city's response to the attack.

But Arrendondo's heroism was well established before that day. His son, U.S. Marine Lance Corporal Alexander Scott Arrendondo, died while deployed in Iraq. He and his wife became noted peace activists, founding the group Gold Star Families for Peace. In the wake of Alexander's death, his brother Brian battled depression and drug addiction before ultimately taking his own life. The Arrendondos created their foundation to empower families to prevent military-related suicides. In addition to providing emergency financial aid to such families, the foundation provides college scholarships for military siblings.