After its debut at the Barcelona Film Festival, where it won double awards in April, Bruno Gascon's second feature film premiered in June at the Shanghai International Film Festival in China and at the Film Festival Ischia, in Italy, “adding already several selections in international festivals that will soon be announced”, said the producer Caracol Studios, in a statement. With its commercial premiere in Portugal scheduled for 7 October, the film has actress Ana Moreira as the main role and pays tribute to the mothers of missing children. Joana Ribeiro, Miguel Borges, Lúcia Moniz, Ana Bustorff, José Raposo and Vitor Norte are other actors that make up the cast of “Sombra”, which also has the special participation of Portuguese model Sara Sampaio.

According to Caracol Studios and NOS Audiovisuais, the story focuses on Isabel's family, shaken by the disappearance of 11-year-old Pedro in the late 1990s. The mother's hope of finding her son is challenged over the next 15 years, but the certainty that Pedro is alive gives Isabel the strength to face all obstacles and not give up. “The film follows the story of this woman and her family over four different years: 1998, 2004, 2011 and 2013,” explained the director, in the note of intent.

According to the producers, it is “a story of love, strength and courage, about a mother who does not give up looking for her missing child”, describe the producers. To write the script, Bruno Gascon spoke with mothers of missing children, such as Filomena Teixeira, mother of Rui Pedro, the 11-year-old boy who disappeared in 1998. In the opinion of Ana Moreira, who plays the role of Isabel, “the title is 'Shadow', but she [the mother] is always looking for the Light”, in a film that, according to Sara Sampaio, “it is dedicated to struggling mothers every day to bring your children home”.

"Sombra" made its world premiere at the Barcelona Film Festival Sant Jordi competition, where it received the award for best work, awarded by the Catalan Association of Critics, and the "Filme-História" award, for the "best film for its historical values".

In June, he was part of the "Spectrum: Alternatives" section of the 24th edition of the Shanghai International Film Festival, and appeared at the Ischia Film Festival. "Sombra" had the support of the Portuguese Association of Missing Children, the distribution rights were acquired by NOS, while RTP bought the television rights. The cinema debut was due to take place in 2020, but was eventually postponed until this year because of the covid-19 pandemic. Bruno Gascon was awarded in Spain at a time when he was in Barcelos filming the feature film "Evadidos", a dystopian film about fascism.