It was directed by Agnieszka Smoczyńska from a screenplay by Andrea Seigel, who adapted the book of the same name by Marjorie Wallace.

The film stars Letitia Wright, Tamara Lawrance, Nadine Marshall, Treva Etienne, Michael Smiley, and Jodhi May.

Feeling isolated from their unwelcoming community, June and Jennifer Gibbons turn inward and reject communication with everyone but each other, retreating into a fantasy world of artistic inspiration and adolescent desires.

In February 2020, it was announced that Letitia Wright and Tamara Lawrance had been cast as twin sisters June and Jennifer Gibbons in the film The Silent Twins, based on the 1986 book of the same name by Marjorie Wallace, with Agnieszka Smoczyńska set to direct and Andrea Seigel set to write the screenplay, it marks Smoczyńska's English-language film debut.

The website's consensus reads, "Although it struggles to really get inside the true story that inspired it, The Silent Twins is still a well-acted and poignant dramatization of actual events.