Actor Will Poulter and filmmaker Adam Meeks will appear at Brookline's Coolidge Corner Theatre on Tuesday, Sept. 15. The pair will take part in a post-screening Q&A following an encore showing of their opioid-crisis drama Union County.

The theatre announced the added screening on Wednesday, Sept. 2, noting that Meeks would join Poulter for both scheduled showings of the film. The Coolidge first revealed the Poulter Q&A on Aug. 28 and added Meeks to the lineup the following week.

Tickets are on sale through the Coolidge's film page. Union County opens for its regular run on Sept. 18.

The film stars Poulter and Noah Centineo as brothers Cody and Jack Parsons, each navigating a court-mandated drug rehabilitation program in a corner of rural Ohio hit hard by the opioid epidemic. A counselor named Annette Deao, a real chemical dependency counselor from Bellefontaine, Ohio, appears in the film alongside the cast.

Poulter, a British actor known for playing Adam Warlock in Guardians of the Galaxy Vol. 3 and for an Emmy-nominated turn in the miniseries Dopesick, also served as a producer on the project. In an August interview with Brooklyn Magazine, he described his character as a composite drawn from real people in recovery.

"Cody is a fictional character, but he's certainly inspired by a number of different participants who have been in the program," Poulter told Brooklyn Magazine.

Meeks, an Ohio native now based in Brooklyn, built the feature from a 13-minute short he filmed inside Bellefontaine's Adult Recovery Court, a program with a success rate of just over 50 percent. That short played at Berlinale Shorts and attracted enough attention for Meeks to expand it into a full-length film. Union County screened at Sundance and picked up distribution through Oscilloscope Laboratories.

It is Meeks' first feature.

In the same Brooklyn Magazine interview, Meeks explained why he chose fiction over documentary. "The last thing somebody in the difficult early phase of recovery needs is a camera crew following them around, looking for dramatic moments," he said.

The Sept. 15 screening gives Brookline audiences a chance to see the film three days before its wider release and to hear from the actor and director who made it. Showtimes have not been posted; the Coolidge's film page lists available tickets.